Name. 1. Boyd has saved 19 quarters and 2 nickels. How much has he saved? A $4.40 B $4.85 C $4.95 D $5.10

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1 Daily Spiral Review Boyd has saved 19 quarters and 2 nickels. How much has he saved? A $4.40 B $4.85 C $4.95 D $ There are 25 students in Mrs. Henley s class. Fourteen of the students are girls. How many of the students are boys? A 11 B 12 C 14 D Evan has a shell collection. On Monday, he found 6 new shells. On Tuesday, he gave 9 shells to his friends. After giving the shells away, Evan had 37 shells left. How many shells did Evan have to start with? 6. Aretha reads 3 chapters of her book each day. How many days will it take Aretha to finish the book if it has 24 chapters? Write a number sentence to solve the problem. Daily Spiral Review What is fifty-eight thousand written in standard form? A 580,000 B 58,000 C 5,800 D Which number has a 6 in the ten thousands place? A 652,931 B 528,629 C 496,893 D 360, Look at the pattern below. What are the next two numbers in the series? 12, 18, 24, 30, 36,, 8. What is the name of the polygon shown below? Topic 2 25

2 Daily Spiral Review Boyd has saved 19 quarters and 2 nickels. How much has he saved? A $4.40 B $4.85 C $4.95 D $ There are 25 students in Mrs. Henley s class. Fourteen of the students are girls. How many of the students are boys? A 11 B 12 C 14 D Evan has a shell collection. On Monday, he found 6 new shells. On Tuesday, he gave 9 shells to his friends. After giving the shells away, Evan had 37 shells left. How many shells did Evan have to start with? 40 shells 6. Aretha reads 3 chapters of her book each day. How many days will it take Aretha to finish the book if it has 24 chapters? Write a number sentence to solve the problem. 8 days; Daily Spiral Review What is fifty-eight thousand written in standard form? A 580,000 B 58,000 C 5,800 D Which number has a 6 in the ten thousands place? A 652,931 B 528,629 C 496,893 D 360, Look at the pattern below. What are the next two numbers in the series? 12, 18, 24, 30, 36, 42, What is the name of the polygon shown below? Pentagon Topic 2 25

3 26 Topic 2 Problem of the Day Problem of the Day 2-1 Tell the operation needed to solve the problem. 2-1 Toby, Neal, and Quinn each gave canned food to the food drive. How many cans did they give altogether? Problem of the Day 2-1

4 Quick Check A 412 B 454 C 464 D A 123 B 133 C 145 D 235 A 360 B 365 C 379 D 699 Quick Check Writing to Explain Kevin wants to buy a new stereo for $239. So far, he has saved $115. Explain how you can use mental math to find out how much more money Kevin needs to save. Topic 2 27

5 Quick Check A 412 B 454 C 464 D A 123 B 133 C 145 D 235 A 360 B 365 C 379 D 699 Quick Check Writing to Explain Kevin wants to buy a new stereo for $239. So far, he has saved $115. Explain how you can use mental math to find out how much more money Kevin needs to save. See student samples to the right. Topic 2 27

6 Using Mental Math to Add and Subtract Reteaching 2-1 Reteaching 2-1 There are different strategies for adding and subtracting with mental math. With breaking apart you can add numbers in any order Addition Strategies Break apart Add one part to make a ten. Add the other part. Using compensation Subtraction Strategies Add 2 to make Since you subtracted 2 too many, add 2 to the answer. With compensation you can add or subtract to make tens Add 2 to make a ten Subtract 2 from the answer because 2 was added earlier. Using counting on Add 5 to make Make the next Add 200 to make Find the total of what you added. Add or subtract. Use mental math Reasoning How can you write 72 (8 19) to make it easier to add? Use mental math to solve. 6. How many more blue marbles are there than yellow marbles? 7. What is the number of red and green marbles? 28 Topic 2

7 Using Mental Math to Add and Subtract Reteaching 2-1 Reteaching 2-1 There are different strategies for adding and subtracting with mental math. With breaking apart you can add numbers in any order Addition Strategies Break apart Add one part to make a ten. Add the other part. Using compensation Subtraction Strategies Add 2 to make Since you subtracted 2 too many, add 2 to the answer. With compensation you can add or subtract to make tens Add 2 to make a ten Subtract 2 from the answer because 2 was added earlier. Using counting on Add 5 to make Make the next Add 200 to make Find the total of what you added. Add or subtract. Use mental math Reasoning How can you write 72 (8 19) to make it easier to add? (72 + 8) + 19 Use mental math to solve. 6. How many more blue marbles are there than yellow marbles? 7. What is the number of red and green marbles? Topic 2

8 Using Mental Math to Add and Subtract Add or subtract. Use mental math Practice Practice Reasoning How can you write 52 (8 25) to make it easier to add? 11. Selena s family went on a trip. The total hotel bill was $659. The cost of the airfare was $633. Use mental math to find the total cost for the hotel and the airfare. 12. One year, 76 people helped at the town cleanup. The next year, 302 people helped. How many more people helped in the second year? Use mental math to find the answer. 13. Stanley wants to collect 900 sports cards. So far, he has collected 428 baseball cards and 217 football cards. How many more cards does Stanley need to complete his collection? A 255 B 472 C 645 D Writing to Explain Explain how you could add using mental math. Topic 2 29

9 Using Mental Math to Add and Subtract Add or subtract. Use mental math Practice Practice , Reasoning How can you write 52 (8 25) to make it easier to add? (52 8) Selena s family went on a trip. The total hotel bill was $659. The cost of the airfare was $633. Use mental math to find the total cost for the hotel and the airfare. $1, One year, 76 people helped at the town cleanup. The next year, 302 people helped. How many more people helped in the second year? Use mental math to find the answer. 13. Stanley wants to collect 900 sports cards. So far, he has collected 428 baseball cards and 217 football cards. How many more cards does Stanley need to complete his collection? 226 people A 255 B 472 C 645 D Writing to Explain Explain how you could add using mental math. Sample answer: and Topic 2 29

10 Mental Puzzles Using mental math to add helps you find tens and hundreds. 1. Look at each number in the puzzle board. Find two numbers in the box whose sum equals that number. Use each number only once. Do not use paper and pencil or a calculator. Enrichment 2-1 Mental Math Enrichment Puzzle Board Explain what methods you used to help you solve the puzzle board. 30 Topic 2

11 Mental Puzzles Using mental math to add helps you find tens and hundreds. 1. Look at each number in the puzzle board. Find two numbers in the box whose sum equals that number. Use each number only once. Do not use paper and pencil or a calculator. Enrichment 2-1 Mental Math Enrichment Puzzle Board Explain what methods you used to help you solve the puzzle board. Check students methods: Sample answer: I looked for ones digits that equal 10 when added together. 30 Topic 2

12 Daily Spiral Review What is forty-six million, seven hundred eighty thousand, two hundred sixteen written in standard form? A 46,708,216 B 46,780,216 C 406,078,216 D 406,780, The fourth-grade class sold 73 tickets for Thursday s basketball game. They sold 99 tickets for Saturday s game. How many tickets did they sell in all? Use mental math to add. A 25 B 26 C 170 D What is 21,883 rounded to the nearest hundred? 5. Destiny has 9 more stickers than Shane. Alisa has 7 fewer stickers than Destiny. If Shane has 20 stickers, how many stickers do Destiny and Alisa each have? 6. Jake jumped 3 feet. Marco jumped 32 inches. Who jumped farther? Explain how you found your answer. Daily Spiral Review Which is NOT a way to say the time shown on the clock below? 7. Which number is missing from the number sentence below? A Fifteen minutes to eight B Seven forty-five C Quarter past seven D Quarter to eight 8. It takes Kiley 5 minutes to run around the track. How many minutes will it take her to run around the track 5 times? Write a number sentence to solve. Topic 2 31

13 Daily Spiral Review What is forty-six million, seven hundred eighty thousand, two hundred sixteen written in standard form? A 46,708,216 B 46,780,216 C 406,078,216 D 406,780, The fourth-grade class sold 73 tickets for Thursday s basketball game. They sold 99 tickets for Saturday s game. How many tickets did they sell in all? Use mental math to add. A 25 B 26 C 170 D Which is NOT a way to say the time shown on the clock below? A Fifteen minutes to eight B Seven forty-five C Quarter past seven D Quarter to eight 4. What is 21,883 rounded to the nearest hundred? 21, Destiny has 9 more stickers than Shane. Alisa has 7 fewer stickers than Destiny. If Shane has 20 stickers, how many stickers do Destiny and Alisa each have? Destiny has 29; Alisa has 22 stickers. 6. Jake jumped 3 feet. Marco jumped 32 inches. Who jumped farther? Explain how you found your answer. Jake jumped farther. 1 ft = 12 inches, so 3 feet = 36 inches 7. Which number is missing from the number sentence below? It takes Kiley 5 minutes to run around the track. How many minutes will it take her to run around the track 5 times? Write a number sentence to solve Daily Spiral Review 2-2 Topic 2 31

14 32 Topic 2 Problem of the Day Problem of the Day 2-2 Jayden wants to buy a baseball cap. He has 8 dollar bills and 15 dimes. Does he have enough money to buy the cap? $ Problem of the Day 2-2

15 Quick Check The longest river in the world is the Nile River. It is 4,132 miles long. The longest river in the United States is the Missouri River. It is 2,540 miles long. Which is the best estimate of the difference in the lengths of the Nile and Missouri rivers? A 1,000 B 1,600 C 2,000 D 6, Sue saved up $286. Then she received $75 for her birthday. About how much money does Sue have now? A $80 B $300 C $370 D $500 Quick Check Writing to Explain Zoe said the best way to estimate 2, is to round each number to the nearest hundred. Sam said the best way to estimate is to round each number to the nearest thousand. Who is correct? Explain your answer. Topic 2 33

16 Quick Check The longest river in the world is the Nile River. It is 4,132 miles long. The longest river in the United States is the Missouri River. It is 2,540 miles long. Which is the best estimate of the difference in the lengths of the Nile and Missouri rivers? A 1,000 B 1,600 C 2,000 D 6, Sue saved up $286. Then she received $75 for her birthday. About how much money does Sue have now? A $80 B $300 C $370 D $500 Quick Check Writing to Explain Zoe said the best way to estimate 2, is to round each number to the nearest hundred. Sam said the best way to estimate is to round each number to the nearest thousand. Who is correct? Explain your answer. See student samples to the right. Topic 2 33

17 Estimating Sums and Differences of Whole Numbers Reteaching 2-2 Rounding can be used to estimate sums and differences. To estimate 1, : To estimate 3,635 1,498: Reteaching 2-2 Rounding Rounding 1,436 rounds to 1,400 3,635 rounds to 3, rounds to 400 1,498 rounds to 1,500 1, ,800 3,600 1,500 2,100 Estimate each sum or difference , ,329 5, ,245 4, ,769 4, ,328 14, ,910 4, Number Sense Is more or less than 400? Explain how you can tell without actually subtracting. 14. The fourth graders are helping raise money for the local animal shelter. They hoped to raise $1,000. So far they have made $465 in bake sales and $710 in T-shirt sales. About how much more than $1,000 have they raised? 34 Topic 2

18 Estimating Sums and Differences of Whole Numbers Reteaching 2-2 Rounding can be used to estimate sums and differences. To estimate 1, : To estimate 3,635 1,498: Reteaching 2-2 Rounding Rounding 1,436 rounds to 1,400 3,635 rounds to 3, rounds to 400 1,498 rounds to 1,500 1, ,800 3,600 1,500 2,100 Estimate each sum or difference Sample answers are given , ,769 4, ,328 14, ,910 4, ,329 5, Number Sense Is more or less than 400? Explain how you can tell without actually subtracting. 8. 9,245 4,033 2,600 6, ,200 1,000 4,900 51,000 37,000 More; 1, The fourth graders are helping raise money for the local animal shelter. They hoped to raise $1,000. So far they have made $465 in bake sales and $710 in T-shirt sales. About how much more than $1,000 have they raised? $ Topic 2

19 Estimating Sums and Differences of Whole Numbers Estimate each sum or difference Practice 2-2 1, ,263 1, ,502 2, ,141 2, ,099 55, ,595 18,999 Practice About how much larger is the largest ocean than the smallest ocean? Ocean Area Ocean Area (million sq km) Arctic Ocean 14,056 Atlantic Ocean 76,762 Indian Ocean 68,556 Pacific Ocean 155, About how many million square kilometers do all the oceans together cover? 12. Mallory is a pilot. Last week she flew the following round trips in miles: 2,020; 1,358; 952; 2,258; and 1,888. Which of the following is a good estimate of the miles Mallory flew last week? A 6,000 mi B 6,800 mi C 7,000 mi D 8,000 mi 13. Writing to Explain Explain how you would estimate to subtract 189 from 643. Topic 2 35

20 Estimating Sums and Differences of Whole Numbers Estimate each sum or difference. Sample answers are given ,263 1, ,502 2,187 Practice 2-2 1, ,000 2,700 10, ,141 2, ,099 55, ,595 18,999 22,000 8, ,000 Practice About how much larger is the largest ocean than the smallest ocean? Sample answer: About 142,000 million sq km Ocean Area Ocean Area (million sq km) Arctic Ocean 14,056 Atlantic Ocean 76,762 Indian Ocean 68,556 Pacific Ocean 155, About how many million square kilometers do all the oceans together cover? Sample answer: About 316,000 million sq km 12. Mallory is a pilot. Last week she flew the following round trips in miles: 2,020; 1,358; 952; 2,258; and 1,888. Which of the following is a good estimate of the miles Mallory flew last week? A 6,000 mi B 6,800 mi C 7,000 mi D 8,000 mi 13. Writing to Explain Explain how you would estimate to subtract 189 from 643. Sample answer: Estimate by rounding each number to the nearest hundred; Topic 2 35

21 Enrichment 2-2 Name Canyon Trip You are going on a three-day camping trip in the Grand Canyon. The chart shows the weights of some equipment you may need. Each person must take at least 2 water canteens and 3 food tins on the trip. 1. You are going to hike alone and carry a backpack. The backpack can hold up to 25 lb. What equipment will you take on the trip? Enrichment 2-2 Decision Making Equipment Weight (lb) Water canteen 1 Food tin 2 Compass 1 2. You are hiking with 2 friends. Each will carry 1 backpack. The 3 of you can carry up to 75 lb. You will only need 1 tent. What equipment will you take on the trip? 3. You and 4 friends are taking a donkey on the trip. The donkey can carry 180 lb. You will not take backpacks. You will need 2 tents. What equipment will you take on the trip? Shovel 5 Binoculars 3 Tent 8 Chair 10 Pillow 2 Extra clothes 7 Cooking pots/pans 30 Sleeping cushion 4 36 Topic 2

22 Enrichment 2-2 Name Canyon Trip You are going on a three-day camping trip in the Grand Canyon. The chart shows the weights of some equipment you may need. Each person must take at least 2 water canteens and 3 food tins on the trip. 1. You are going to hike alone and carry a backpack. The backpack can hold up to 25 lb. What equipment will you take on the trip? 2 canteens, 3 food tins, compass, tent, extra clothes; Total must be 25 lb. 2. You are hiking with 2 friends. Each will carry 1 backpack. The 3 of you can carry up to 75 lb. You will only need 1 tent. What equipment will you take on the trip? Enrichment 2-2 Decision Making Equipment Weight (lb) Water canteen 1 Food tin 2 Compass 1 Shovel 5 Binoculars 3 Tent 8 Chair 10 Pillow 2 Extra clothes 7 Cooking pots/pans 30 Sleeping cushion 4 Sample answers for canteens, 9 food tins, compass, tent, 3 extra clothes, chair, shovel, pillow, sleeping cushion; Total must be 75 lb. 3. You and 4 friends are taking a donkey on the trip. The donkey can carry 180 lb. You will not take backpacks. You will need 2 tents. What equipment will you take on the trip? Sample answer: 10 canteens, 15 food tins, 2 tents, compass, 5 extra clothes, pots and pans, 5 chairs, and binoculars; Total must be 180 lb. 36 Topic 2

23 Daily Spiral Review Harriet brought 86 cookies to the school bake sale. She sold 45 cookies. How many cookies did Harriet have left? Use mental math to subtract. A 51 B 41 C 31 D Shauna bought a book for $7 and a calculator for $21. About how much did she spend for both items? A $50 B $30 C $20 D $10 3. Rocco started to practice karate at 3:00 P.M. He finished at the time shown on the clock below. How long did he practice karate? P.M. 4. Maria s school has 248 students enrolled. How many is that rounded to the nearest ten? 5. Luis has eight tickets for the school spree day. He needs three for the dunk tank, four for the moon walk, and two for the coin toss. Does Luis have enough tickets for all three events? Explain why or why not. 6. Roberto eats two muffins every day. How many muffins does he eat in a week (7 days)? Daily Spiral Review 2-3 A 1 hour B 1 hour 45 minutes C 15 minutes D 45 minutes Topic 2 37

24 Daily Spiral Review Harriet brought 86 cookies to the school bake sale. She sold 45 cookies. How many cookies did Harriet have left? Use mental math to subtract. A 51 B 41 C 31 D Shauna bought a book for $7 and a calculator for $21. About how much did she spend for both items? A $50 B $30 C $20 D $10 3. Rocco started to practice karate at 3:00 P.M. He finished at the time shown on the clock below. How long did he practice karate? P.M. 4. Maria s school has 248 students enrolled. How many is that rounded to the nearest ten? Luis has eight tickets for the school spree day. He needs three for the dunk tank, four for the moon walk, and two for the coin toss. Does Luis have enough tickets for all three events? Explain why or why not. No, he needs nine but only has eight. 6. Roberto eats two muffins every day. How many muffins does he eat in a week (7 days)? 14 muffins Daily Spiral Review 2-3 A 1 hour B 1 hour 45 minutes C 15 minutes D 45 minutes Topic 2 37

25 38 Topic 2 Problem of the Day Problem of the Day What information is needed to solve the problem? In a football game, the winning team passed for 47 more yards than the losing team. How many yards did the winning team pass for? Problem of the Day 2-3

26 Quick Check Mark has 11 yellow or red fish and a frog. There are 4 red fish. How many fish are yellow? A 4 B 5 C 7 D Not enough information 2. Josie has 13 red or blue fish. How many are blue? A 6 B 7 C 19 D Not enough information 3. Max drove 5 miles from his home to the mall, with a stop first at the gas station. The gas station is 2 miles from the mall. How far is it from his house to the gas station? A 2 miles B 3 miles C 6 miles D Not enough information 4. The department store has a total of 48 straight-leg jeans and bell-bottom jeans on sale for $24.99 each pair. They have equal numbers of the two types. How many pairs of straight-leg jeans do they have? A 2 B 24 C 48 D Not enough information Quick Check Writing to Explain Lucy danced for an hour, practicing ballet, jazz, and tap. She practiced twice as long on jazz as on tap. She practiced ballet as many minutes as tap. Explain whether you have enough information to find the number of minutes she practiced tap. If so, write a number sentence. Topic 2 39

27 Quick Check Mark has 11 yellow or red fish and a frog. There are 4 red fish. How many fish are yellow? A 4 B 5 C 7 D Not enough information 2. Josie has 13 red or blue fish. How many are blue? A 6 B 7 C 19 D Not enough information 3. Max drove 5 miles from his home to the mall, with a stop first at the gas station. The gas station is 2 miles from the mall. How far is it from his house to the gas station? A 2 miles B 3 miles C 6 miles D Not enough information 4. The department store has a total of 48 straight-leg jeans and bell-bottom jeans on sale for $24.99 each pair. They have equal numbers of the two types. How many pairs of straight-leg jeans do they have? A 2 B 24 C 48 D Not enough information Quick Check Writing to Explain Lucy danced for an hour, practicing ballet, jazz, and tap. She practiced twice as long on jazz as on tap. She practiced ballet as many minutes as tap. Explain whether you have enough information to find the number of minutes she practiced tap. If so, write a number sentence. See student samples to the right. Topic 2 39

28 Problem Solving: Missing or Extra Information Reteaching 2-3 Some problems contain too much or too little information. If a problem has missing information, you cannot solve it. If a problem has extra information, you need to figure out what information is needed to solve the problem. Reteaching 2-3 Step 1: Read and Understand Mark has $40. Nora has $45. How much money will Mark have left if he buys a CD for $15? To solve this problem, you need to find out how much money Mark will have left over after he buys a CD. Step 2: Plan and Solve Decide which information you need to solve the problem and what is extra information. You need to know how much money Mark has and how much the CD costs. You do not need to know how much money Nora has. Then, subtract the amount of money Mark spent on the CD from the amount of money he had Mark has $25 left. Larissa volunteers at a wildlife group. One of her jobs is to photocopy a flyer and give copies to her friends and neighbors. Last month Larissa made 45 copies. There were 15 in color and 30 in black and white. This month Larissa made 75 copies. 1. Do you have enough information to find out how many copies Larissa made in the last 2 months? Explain. In order to raise money for the National Pet Association, Karl plans to sell bags of pet treats. He will fill 100 bags of treats. He made bags of treats for cats and bags of treats for dogs. How many dog treats did Karl use? 2. What information did you not use to solve this problem? 3. Do you have enough information to find out how many bags of dog treats Karl made? 40 Topic 2

29 Problem Solving: Missing or Extra Information Reteaching 2-3 Some problems contain too much or too little information. If a problem has missing information, you cannot solve it. If a problem has extra information, you need to figure out what information is needed to solve the problem. Reteaching 2-3 Step 1: Read and Understand Mark has $40. Nora has $45. How much money will Mark have left if he buys a CD for $15? To solve this problem, you need to find out how much money Mark will have left over after he buys a CD. Step 2: Plan and Solve Decide which information you need to solve the problem and what is extra information. You need to know how much money Mark has and how much the CD costs. You do not need to know how much money Nora has. Then, subtract the amount of money Mark spent on the CD from the amount of money he had Mark has $25 left. Larissa volunteers at a wildlife group. One of her jobs is to photocopy a flyer and give copies to her friends and neighbors. Last month Larissa made 45 copies. There were 15 in color and 30 in black and white. This month Larissa made 75 copies. 1. Do you have enough information to find out how many copies Larissa made in the last 2 months? Explain. Yes, Larissa made 45 copies last month and 75 copies this month. In order to raise money for the National Pet Association, Karl plans to sell bags of pet treats. He will fill 100 bags of treats. He made bags of treats for cats and bags of treats for dogs. How many dog treats did Karl use? 2. What information did you not use to solve this problem? The number of colored and black and white copies. 3. Do you have enough information to find out how many bags of dog treats Karl made? No, you need to know the number of bags of cat treats. 40 Topic 2

30 Problem Solving: Missing or Extra Information For 1 through 3, decide if each problem has extra information or not enough information. Tell any information that is not needed or that is missing. Solve if you have enough information. Practice Kendall pitches for his school s baseball team. Every game Kendall pitches, he averages 5 strikeouts per game. Each game is about 2 hours. If Kendall pitches in 7 games during the season, how many strikeouts will he have? 2. Geometry Yolanda is putting up a fence for her dog in the shape of a square. Each foot of fencing costs $7. If Yolanda is planning to have each side of the fence be 10 feet long, how many feet of fencing will Yolanda need? Practice Gretchen sings and plays guitar in a band after school. If Gretchen sings half of the songs the band knows, how many songs does the band know? 4. What do you need to know if you re trying to find the year George Washington was born and you know he died in 1799? A The current year B The exact date he died C How old he was when he died D There is enough information. 5. Writing to Explain If you wanted to write a word problem about how much money the fourth-grade class collected at their bake sale, what information would you need to include? Topic 2 41

31 Problem Solving: Missing or Extra Information For 1 through 3, decide if each problem has extra information or not enough information. Tell any information that is not needed or that is missing. Solve if you have enough information. Practice Kendall pitches for his school s baseball team. Every game Kendall pitches, he averages 5 strikeouts per game. Each game is about 2 hours. If Kendall pitches in 7 games during the season, how many strikeouts will he have? Extra information. Each game is 2 hours long. About 35 strikeouts. 2. Geometry Yolanda is putting up a fence for her dog in the shape of a square. Each foot of fencing costs $7. If Yolanda is planning to have each side of the fence be 10 feet long, how many feet of fencing will Yolanda need? Extra information. Each foot of fencing costs $7. She will need 40 ft of fencing. 3. Gretchen sings and plays guitar in a band after school. If Gretchen sings half of the songs the band knows, how many songs does the band know? Not enough information. I need to know how many songs Gretchen sings. 4. What do you need to know if you re trying to find the year George Washington was born and you know he died in 1799? A The current year C How old he was when he died Practice 2-3 B The exact date he died D There is enough information. 5. Writing to Explain If you wanted to write a word problem about how much money the fourth-grade class collected at their bake sale, what information would you need to include? How many items they sold and how much each item cost. Topic 2 41

32 Birdhouses Cecilia owns a store that specializes in selling decorated birdhouses. The table at the right shows the number of birdhouses Cecilia sold each month. Write an expression to represent the following situations. Enrichment 2-3 Algebra Enrichment How many birdhouses did Cecilia sell in May and June together? 2. How many more birdhouses did Cecilia sell in October than in September? 3. What is the total number of birdhouses Cecilia sold from February through May? 4. If Cecilia sold 152 birdhouses in May, how many birdhouses did she sell in January and May combined? Birdhouses Sold January 417 February 379 March 341 April 262 May m June 89 July 76 August 94 September s October 296 November 439 December If Cecilia sold 257 birdhouses in September, how many more birdhouses did she sell in September than in August? 6. The company that makes the birdhouses is now charging $4 more for each birdhouse. If Cecilia used to pay b for each birdhouse, how much will she need to pay now? 42 Topic 2

33 Enrichment 2-3 Name Birdhouses Cecilia owns a store that specializes in selling decorated birdhouses. The table at the right shows the number of birdhouses Cecilia sold each month. Write an expression to represent the following situations. 1. How many birdhouses did Cecilia sell in May and June together? m How many more birdhouses did Cecilia sell in October than in September? 296 s 3. What is the total number of birdhouses Cecilia sold from February through May? m 4. If Cecilia sold 152 birdhouses in May, how many birdhouses did she sell in January and May combined? Enrichment 2-3 Birdhouses Sold January 417 February 379 March 341 April 262 May m June 89 July 76 August 94 September Algebra October 296 November 439 December 611 s 5. If Cecilia sold 257 birdhouses in September, how many more birdhouses did she sell in September than in August? The company that makes the birdhouses is now charging $4 more for each birdhouse. If Cecilia used to pay b for each birdhouse, how much will she need to pay now? b $4 42 Topic 2

34 Daily Spiral Review On Friday, Dave read 27 pages of his new book. On Saturday, he read 62 pages. How many pages did Dave read in two days? Use mental math to add. A 99 B 97 C 89 D 79 Use the table below for 4 through 7. The students at Martha s school were surveyed about their favorite animal they saw at the zoo. Animals Votes Lion 216 Tiger 378 Monkey 192 Bear Marco bought a pair of pants for $36 and a hat for $12. About how much did Marco spend? A $50 B $46 C $40 D $30 3. A newspaper sold 13,441,902 copies last week. The editor wants to round that number to the nearest hundred thousand for a report. Which number will he use in the report? A 13,000,000 B 13,400,000 C 13,441,900 D 13,500, Rounded to the nearest ten, how many students voted for the bear? 5. About how many students voted for the lion and the tiger altogether? 6. How many more students voted for the monkey than for the bear? 7. Write a number sentence to show about how many students voted in all. Daily Spiral Review 2-4 Topic 2 43

35 Daily Spiral Review On Friday, Dave read 27 pages of his new book. On Saturday, he read 62 pages. How many pages did Dave read in two days? Use mental math to add. A 99 B 97 C 89 D 79 Use the table below for 4 through 7. The students at Martha s school were surveyed about their favorite animal they saw at the zoo. Animals Votes Lion 216 Tiger 378 Monkey 192 Bear Marco bought a pair of pants for $36 and a hat for $12. About how much did Marco spend? A $50 B $46 C $40 D $30 3. A newspaper sold 13,441,902 copies last week. The editor wants to round that number to the nearest hundred thousand for a report. Which number will he use in the report? A 13,000,000 B 13,400,000 C 13,441,900 D 13,500, Rounded to the nearest ten, how many students voted for the bear? About how many students voted for the lion and the tiger altogether? How many more students voted for the monkey than for the bear? Write a number sentence to show about how many students voted in all Daily Spiral Review 2-4 Topic 2 43

36 44 Topic 2 Problem of the Day Problem of the Day 2-4 A community garden produced 106 tomatoes the first week, 238 tomatoes the next week, and 354 tomatoes the third week. Estimate the number of tomatoes that were produced altogether during the three weeks. 2-4 Problem of the Day 2-4

37 1. Juliana read 86 pages of her book last week. She read 58 pages of her book this week. How many pages of her book did she read in both weeks? A 171 B 144 C 32 D 28 Quick Check The third, fourth, and fifth grades collected aluminum cans for the recycling drive as shown in the table below. How many cans did they collect altogether? Number of Cans Grade Collected Third 1,488 Fourth 1,872 Fifth 2,087 A 3,360 B 4,237 C 5,407 D 5, Writing to Explain Michael added the numbers 3,428 5,125. His work is shown below. His answer is not correct. Explain what he did wrong. Then, correctly answer the problem. Quick Check ,428 5,125 8,571 Topic 2 45

38 1. Juliana read 86 pages of her book last week. She read 58 pages of her book this week. How many pages of her book did she read in both weeks? A 171 B 144 C 32 D 28 Quick Check The third, fourth, and fifth grades collected aluminum cans for the recycling drive as shown in the table below. How many cans did they collect altogether? Number of Cans Grade Collected Third 1,488 Fourth 1,872 Fifth 2,087 A 3,360 B 4,237 C 5,407 D 5, Writing to Explain Michael added the numbers 3,428 5,125. His work is shown below. His answer is not correct. Explain what he did wrong. Then, correctly answer the problem. Quick Check ,428 5,125 8,571 See student samples to the right. Topic 2 45

39 Adding Whole Numbers Reteaching 2-4 You can add more than two numbers when you line up the numbers by place value and add one place at a time. Add 3, ,547. Estimate: 3, ,000 9,100 Step 1 Step 2 Step 3 Line up numbers by place value. Add the ones. Add the tens. Regroup if needed. Add the hundreds, then the thousands. Continue to regroup. Regroup if needed. Reteaching , , becomes 2 tens and 2 ones , , Keep digits in neat columns as you add , , , ,142 is close to the estimate of 9,100. Add , ,566 8,222 5, , , ,017 3, ,484 3,881 1, Number Sense Jill added and got 1,163. Is this sum reasonable? 46 Topic 2

40 Adding Whole Numbers Reteaching 2-4 You can add more than two numbers when you line up the numbers by place value and add one place at a time. Add 3, ,547. Estimate: 3, ,000 9,100 Step 1 Step 2 Step 3 Line up numbers by place value. Add the ones. Add the tens. Regroup if needed. Add the hundreds, then the thousands. Continue to regroup. Regroup if needed. Reteaching , , becomes 2 tens and 2 ones , , Keep digits in neat columns as you add , , , ,142 is close to the estimate of 9,100. Add , , , ,017 3, ,484 12,566 8,222 5,532 1,412 3,827 26,320 3,881 1, ,220 52,494 5, Number Sense Jill added and got 1,163. Is this sum reasonable? No, the sum should be closer to 1, Topic 2

41 Adding Whole Numbers Add , ,948 1, ,947 Practice 2-4 7,226 1,587 72, , , , ,098 7,856 1,986 7,945 8,738 5, Number Sense Luke added and got 950. Is this sum reasonable? 10. What is the combined length of the three longest glaciers? 11. What is the total combined length of the four longest glaciers in the world? World s Longest Glaciers Glacier Length (miles) Lambert-Fisher Ice Passage 320 Novaya Zemlya 260 Arctic Institute Ice Passage 225 Nimrod-Lennox-King 180 Practice Which is the sum of 3,774 8, ? A 1,251 B 12,152 C 13,052 D 102, Writing to Explain Leona added 6,641 1,482 9,879. Should her answer be more than or less than 15,000? Topic 2 47

42 Adding Whole Numbers Add , ,948 1, , , , , ,098 7,856 1,986 7,945 Practice 2-4 7,226 1,587 72,984 1,406 10,172 11,372 81,797 8,738 5, ,315 3,030 53,126 15, Number Sense Luke added and got 950. Is this sum reasonable? No, his answer should be closer to 1, What is the combined length of the three longest glaciers? 805 mi 11. What is the total combined length of the four longest glaciers in the world? 985 mi World s Longest Glaciers Glacier Length (miles) Lambert-Fisher Ice Passage 320 Novaya Zemlya 260 Arctic Institute Ice Passage 225 Nimrod-Lennox-King 180 Practice Which is the sum of 3,774 8, ? A 1,251 B 12,152 C 13,052 D 102, Writing to Explain Leona added 6,641 1,482 9,879. Should her answer be more than or less than 15,000? Leona s answer should be more than 15,000. Topic 2 47

43 Use Your Head Look at the problem and the answer. Without actually adding the problem, decide whether or not the given answer is reasonable. Write Yes or No and explain your answer. Enrichment 2-4 Reasonableness Enrichment ,207 4,956 2, , ,058 20, ,341 4,750 18,903 70,751 1,532 80, Topic 2

44 Use Your Head Look at the problem and the answer. Without actually adding the problem, decide whether or not the given answer is reasonable. Write Yes or No and explain your answer. Enrichment 2-4 Reasonableness Yes; The answer should be close to Yes; The answer should be about 1,000. Enrichment No; The answer should be close to ,207 4,956 2, ,217 No; The answer should be about 25, ,058 20, ,341 4,750 18,903 70,751 1,532 80,623 Yes; The answer should be close to 70,000. No; The answer should be about 8, Topic 2

45 1. Paula s family sells lemonade at county fairs during the summer. The chart below shows how many cups of lemonade they sold each month. Lemonade Sales Number of Month Cups Sold May 410 June 1,438 July 4,899 August 2,145 TOTAL Daily Spiral Review Jasmine handed out fliers for a charity event. She started with 75 fliers and ended with 21. How many fliers did Jasmine hand out? Show your work. 5. Multiply Multiply What was the total number of cups Paula s family sold? A 8,453 B 8,763 C 8,882 D 8,892 Daily Spiral Review What is 12,389 rounded to the nearest hundred? A 12,000 B 12,300 C 12,390 D 12, If there are 10,000 bees in 1 hive, how many bees are in 5 hives? A 5,000 B 50,000 C 500,000 D 5,000,000 Topic 2 49

46 1. Paula s family sells lemonade at county fairs during the summer. The chart below shows how many cups of lemonade they sold each month. Lemonade Sales Number of Month Cups Sold May 410 June 1,438 July 4,899 August 2,145 TOTAL Daily Spiral Review Jasmine handed out fliers for a charity event. She started with 75 fliers and ended with 21. How many fliers did Jasmine hand out? Show your work Multiply Multiply What was the total number of cups Paula s family sold? A 8,453 B 8,763 C 8,882 D 8,892 Daily Spiral Review What is 12,389 rounded to the nearest hundred? A 12,000 B 12,300 C 12,390 D 12, If there are 10,000 bees in 1 hive, how many bees are in 5 hives? A 5,000 B 50,000 C 500,000 D 5,000,000 Topic 2 49

47 50 Topic 2 Problem of the Day 2-5 Problem of the Day 2-5 Tomás has 67 baseball cards and 48 football cards in his collection. How many sports cards does Tomás have in all? Problem of the Day 2-5

48 Quick Check A 178 B 228 C 238 D , A 840 B 894 C 904 D Hannah scored 5,772 points playing her favorite computer game. Joshua scored 4,881 points on the same game. How many more points did Hannah score than Joshua? A 891 B 999 C 1,001 D 1, Writing to Explain Jeremy earned a total of $288 mowing lawns this summer. He plans to use the money he earned to buy a new bike. If the bike costs $279, how much money will Jeremy have left? Explain how you found your answer. Quick Check 2-5 Topic 2 51

49 Quick Check A 178 B 228 C 238 D , A 840 B 894 C 904 D Hannah scored 5,772 points playing her favorite computer game. Joshua scored 4,881 points on the same game. How many more points did Hannah score than Joshua? A 891 B 999 C 1,001 D 1, Writing to Explain Jeremy earned a total of $288 mowing lawns this summer. He plans to use the money he earned to buy a new bike. If the bike costs $279, how much money will Jeremy have left? Explain how you found your answer. See student samples to the right. Quick Check 2-5 Topic 2 51

50 Subtracting Whole Numbers Reteaching 2-5 Here is how to subtract. Find 7,445 1,368. Estimate: 7,000 1,000 6,000 Step 1 Step 2 Step 3 Step , , , , , , , ,368 6,077 Reteaching 2-5 You cannot subtract 8 ones from 5 ones. You must regroup. Regroup 4 tens as 3 tens and 10 ones. Subtract 8 ones from 15 ones. You cannot subtract 6 tens from 3 tens. You must regroup. Regroup 4 hundreds as 3 hundreds and 10 tens. Subtract 6 tens from 13 tens. Subtract 3 hundreds from 3 hundreds. Subtract 1 thousand from 7 thousands ,077 1,368 7,445 You can check your answer using addition. Subtract ,772 1, ,335 4, ,219 1, ,216 2, Estimation Carlos has 2,175 marbles in his collection. Emily has 1,833 marbles in her collection. Carlos says that he has about 1,000 more marbles than Emily. Is Carlos correct? 52 Topic 2

51 Subtracting Whole Numbers Reteaching 2-5 Here is how to subtract. Find 7,445 1,368. Estimate: 7,000 1,000 6,000 Reteaching 2-5 Step 1 Step 2 Step 3 Step , ,368 7 You cannot subtract 8 ones from 5 ones. You must regroup. Regroup 4 tens as 3 tens and 10 ones. Subtract 8 ones from 15 ones , , You cannot subtract 6 tens from 3 tens. You must regroup. Regroup 4 hundreds as 3 hundreds and 10 tens. Subtract 6 tens from 13 tens , , Subtract 3 hundreds from 3 hundreds , ,368 6,077 Subtract 1 thousand from 7 thousands ,077 1,368 7,445 You can check your answer using addition. Subtract ,772 1, ,335 4, ,219 1, ,216 2,158 3,101 4,147 2,840 3, Estimation Carlos has 2,175 marbles in his collection. Emily has 1,833 marbles in her collection. Carlos says that he has about 1,000 more marbles than Emily. Is Carlos correct? No; Carlos has about 400 more marbles than Emily. 52 Topic 2

52 Subtracting Whole Numbers Subtract. Practice , ,797 1, ,392 4, ,898 1, , ,328 1, ,333 1, ,797 1, Which of the following best describes the answer to the subtraction problem below? 3,775 1,831 A The answer is less than 1,000. B The answer is about 1,000. C The answer is greater than 1,000. Practice 2-5 D You cannot tell from the information given. 13. Writing to Explain The Environmental Club s goal is to collect 1,525 cans by the end of the summer. The number of cans they collected each week is shown in the table below. How can you find the number of cans they need to collect in week 4 to meet their goal? Week Number Number of cans collected Topic 2 53

53 Subtracting Whole Numbers Subtract. Practice , ,797 1,298 7, , ,392 4, , ,898 1, , ,599 3,262 1,574 7,778 5, ,328 1, ,333 1, ,797 1, Which of the following best describes the answer to the subtraction problem below? 3,775 1,831 A The answer is less than 1,000. B The answer is about 1,000. C The answer is greater than 1,000. Practice 2-5 D You cannot tell from the information given. 13. Writing to Explain The Environmental Club s goal is to collect 1,525 cans by the end of the summer. The number of cans they collected each week is shown in the table below. How can you find the number of cans they need to collect in week 4 to meet their goal? Week Number Number of cans collected Add the number of cans they collected in weeks 1 3, and subtract from 1,525. Topic 2 53

54 So Many Decisions! The local sports store is holding an anniversary sale. As part of the sale, every 100th customer gets a chance to win prizes. Each selected shopper gets 15 minutes to fill a shopping cart with sporting goods and clothing. If the total price of the items is more than $280 but less than $300, the shopper keeps everything in the cart. Here is a list of sporting goods and clothing. Place a check mark next to any item you would put in the cart. Then find your total. Enrichment 2-5 Estimation Item Price Item Price Enrichment 2-5 Baseball $ 4.99 Football $17.95 Basketball $21.99 Hockey puck $ 8.50 Baseball glove $34.99 Running shorts $11.50 Cycling gloves $16.00 Stopwatch $ 3.49 Football helmet $ Golf clubs $99.99 Bicycle $ Tennis racket $ Tennis balls $ 7.25 Sweatshirt $ Shoes $ Weight set $ In-line skates $ Gym ball $ 1.99 Baseball bat $ Golf balls $ What is your total price? 2. Did you win your items? 3. How did you decide which items to choose? 54 Topic 2

55 So Many Decisions! The local sports store is holding an anniversary sale. As part of the sale, every 100th customer gets a chance to win prizes. Each selected shopper gets 15 minutes to fill a shopping cart with sporting goods and clothing. If the total price of the items is more than $280 but less than $300, the shopper keeps everything in the cart. Here is a list of sporting goods and clothing. Place a check mark next to any item you would put in the cart. Then find your total. Enrichment 2-5 Estimation Item Price Item Price Enrichment 2-5 Baseball $ 4.99 Football $17.95 Basketball $21.99 Hockey puck $ 8.50 Baseball glove $34.99 Running shorts $11.50 Cycling gloves $16.00 Stopwatch $ 3.49 Football helmet $ Golf clubs $99.99 Bicycle $ Tennis racket $ Tennis balls $ 7.25 Sweatshirt $ Shoes $ Weight set $ In-line skates $ Gym ball $ 1.99 Baseball bat $ Golf balls $ What is your total price? Check students totals. 2. Did you win your items? Check students answers. 3. How did you decide which items to choose? Check that students used addition and estimation to decide on items that would fall within the price range. 54 Topic 2

56 Daily Spiral Review Which number is thirty-two thousand, four hundred eight written in standard form? A 32,480 B 32,408 C 30,248 D 30, The Wolves sold 4,038 tickets to their soccer game. The Leopards sold 4,048 tickets to their game. Which shows the correct way to compare 4,038 and 4,048? A 4,038 4,048 B 4,038 4,048 C 4,038 4,048 D 4,038 4,048 Lilith brought 20 cans to the food drive. Marcus brought 7 cans to the food drive. If Paulina brought 8 more cans than Lilith and Marcus combined, how many cans did Paulina bring? Paulina s Donation =? So, Paulina brought 35 cans to the food drive. 4. Did Norman answer the question correctly? Is his work correct? Explain. 3. To what place is the number 12,340,000 rounded? A Tens B Hundreds C Thousands D Ten thousands Daily Spiral Review 2-6 Topic 2 55

57 Daily Spiral Review Which number is thirty-two thousand, four hundred eight written in standard form? A 32,480 B 32,408 C 30,248 D 30,240 Lilith brought 20 cans to the food drive. Marcus brought 7 cans to the food drive. If Paulina brought 8 more cans than Lilith and Marcus combined, how many cans did Paulina bring? Paulina s Donation =? 2. The Wolves sold 4,038 tickets to their soccer game. The Leopards sold 4,048 tickets to their game. Which shows the correct way to compare 4,038 and 4,048? A 4,038 4,048 B 4,038 4,048 C 4,038 4,048 D 4,038 4, To what place is the number 12,340,000 rounded? A Tens B Hundreds C Thousands D Ten thousands So, Paulina brought 35 cans to the food drive. 4. Did Norman answer the question correctly? Is his work correct? Explain. Yes, Paulina brought 35 cans. Norman s work is correct. Daily Spiral Review 2-6 Topic 2 55

58 56 Topic 2 Problem of the Day 2-6 Problem of the Day Mrs. Taylor makes hummingbird food using sugar and water. She uses 4 cups of water for every 1 cup of sugar. How many cups of water does she need if she has 5 cups of sugar? 2-6 Problem of the Day 2-6

59 Quick Check 2-6 Circle the correct answer A 149 B 151 C 249 D , A 239 B 329 C 1,031 D 1, ,070 4,675 A 4,395 B 4,415 C 5,275 D 5, Writing to Explain Petulia needed to subtract 375 from 700. Is her answer correct? If not, explain why and write the correct answer Quick Check 2-6 Topic 2 57

60 Quick Check 2-6 Circle the correct answer A 149 B 151 C 249 D , A 239 B 329 C 1,031 D 1, ,070 4,675 A 4,395 B 4,415 C 5,275 D 5, Writing to Explain Petulia needed to subtract 375 from 700. Is her answer correct? If not, explain why and write the correct answer See student samples to the right. Quick Check 2-6 Topic 2 57

61 Subtracting Across Zeros Reteaching 2-6 Here is how to subtract across zeros. Find Estimate: Step 1 Step 2 Step 3 Step You cannot subtract 7 ones from 6 ones, so you must regroup. Since there is a zero in the tens place, you must regroup using the hundreds. Regroup 6 hundreds as 5 hundreds and 10 tens. Regroup 10 tens and 6 ones as 9 tens and 16 ones. Subtract You can check your answer by using addition. Reteaching 2-6 Subtract , , , , ,569 1,466 2,999 6,083 1, Reasonableness Lexi subtracts 9,405 from 11,138. Should her answer be greater than or less than 2,000? Explain. 58 Topic 2

62 Subtracting Across Zeros Reteaching 2-6 Here is how to subtract across zeros. Find Estimate: Step 1 Step 2 Step 3 Step You cannot subtract 7 ones from 6 ones, so you must regroup. Since there is a zero in the tens place, you must regroup using the hundreds. Regroup 6 hundreds as 5 hundreds and 10 tens. Regroup 10 tens and 6 ones as 9 tens and 16 ones. Subtract You can check your answer by using addition. Reteaching 2-6 Subtract , , , , , ,569 1,466 2,999 6,083 1, ,610 5,107 4, Reasonableness Lexi subtracts 9,405 from 11,138. Should her answer be greater than or less than 2,000? Explain. Less than; 405 is greater than 138, so you would regroup to subtract. 58 Topic 2

63 Subtracting Across Zeros Subtract , , ,361 2,557 Practice , , , ,596 2, ,403 3, ,067 2, ,790 1, Robert set a goal to swim 1,000 laps in the local swimming pool during his summer break. Robert has currently finished 642 laps. How many more laps does he have to swim in order to meet his goal? A 332 B 358 C 468 D Writing to Explain If , then Explain the process of checking your work. Practice 2-6 Topic 2 59

64 Subtracting Across Zeros Subtract , , ,361 2, , , , ,596 2,366 Practice ,730 1, , ,403 3, ,067 2, ,790 1,298 4,149 2,080 5, Robert set a goal to swim 1,000 laps in the local swimming pool during his summer break. Robert has currently finished 642 laps. How many more laps does he have to swim in order to meet his goal? A 332 B 358 C 468 D Writing to Explain If , then Explain the process of checking your work. Add to check the difference because addition and subtraction are inverse operations. They undo each other. Practice 2-6 Topic 2 59

65 Transportation Conclusions Each person made a conclusion about the data in the table. Think about each person s conclusion. Do you agree? Explain. Enrichment 2-6 Data Country Airports and Railways Number of Airports Length of Railways (km) Australia ,738 Finland 148 5,741 France ,085 Germany ,201 Hungary 46 7,937 Japan ,556 New Zealand 118 4,128 Enrichment Kylie compared the length of railways in Australia and Japan. She concluded that Australia has 24,282 kilometers of railway more than Japan. 2. Franklin looked at the number of airports in Germany and Hungary. He concluded that Germany has 508 more airports than Hungary. 3. Theona concluded that France has 14 more airports than Hungary, New Zealand, Finland, and Japan altogether. 60 Topic 2

66 Transportation Conclusions Each person made a conclusion about the data in the table. Think about each person s conclusion. Do you agree? Explain. Enrichment 2-6 Data Airports and Railways Enrichment 2-6 Country Number of Airports Length of Railways (km) Australia ,738 Finland 148 5,741 France ,085 Germany ,201 Hungary 46 7,937 Japan ,556 New Zealand 118 4, Kylie compared the length of railways in Australia and Japan. She concluded that Australia has 24,282 kilometers of railway more than Japan. No, Kylie subtracted incorrectly. Australia has 24,182 kilometers more railway. 2. Franklin looked at the number of airports in Germany and Hungary. He concluded that Germany has 508 more airports than Hungary. Yes, Franklin subtracted correctly and his conclusion is correct. Sample answers are given. 3. Theona concluded that France has 14 more airports than Hungary, New Zealand, Finland, and Japan altogether. Yes, Theona subtracted correctly and her conclusion is correct. 60 Topic 2

67 Daily Spiral Review A florist delivered 24 flowers for a birthday party and 48 flowers for a wedding. How many flowers did the florist deliver for both events? Use mental math to add. A 72 B 70 C 62 D Rosita has $ She buys a sundae for $2.59. How much money does she have left? A $4.71 B $7.14 C $7.41 D $ Jack travels 12 miles each day on the school bus. How many miles does Jack travel in 5 days? 5. The distance from Earth to the moon is about 250,000 miles. A spaceship can travel 50,000 miles in a day. Can the spaceship travel to the moon and back again in one week? 3. Bay City has a population of 49,542. What is Bay City s population rounded to the nearest thousand? A 49,000 B 49,542 C 50,000 D 60,000 Daily Spiral Review 2-7 Topic 2 61

68 1. A florist delivered 24 flowers for a birthday party and 48 flowers for a wedding. How many flowers did the florist deliver for both events? Use mental math to add. A 72 B 70 C 62 D Rosita has $ She buys a sundae for $2.59. How much money does she have left? A $4.71 B $7.14 C $7.41 D $8.41 Daily Spiral Review Jack travels 12 miles each day on the school bus. How many miles does Jack travel in 5 days? 60 miles 5. The distance from Earth to the moon is about 250,000 miles. A spaceship can travel 50,000 miles in a day. Can the spaceship travel to the moon and back again in one week? No, it would take 10 days. 3. Bay City has a population of 49,542. What is Bay City s population rounded to the nearest thousand? A 49,000 B 49,542 C 50,000 D 60,000 Daily Spiral Review 2-7 Topic 2 61

69 62 Topic 2 Problem of the Day 2-7 Problem of the Day Draw a picture to show the main idea. Solve. The animal rescue association put this ad in the paper. 2-7 How many animals need adopting? Problem of the Day 2-7