Name. Mark the best answer.

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1 Mark the best answer. 1. Lisa has 15 buttons. She makes puppets that use 5 buttons each. Which equation shows how many puppets Lisa can make? (7-4) Topic 7 Test 3. Four students have 20 crayons to share. Which number sentence shows how many crayons each student will get? (7-1) A n B n C n D n 2. Which story could be solved with ? (7-5) A Carmen has 18 flowers. He puts 3 flowers in a vase. How many flowers are not in the vase? B Sandra buys 18 packs of baseball cards. Each pack has 3 cards. How many baseball cards does Sandra have? C Miss Reynolds has 18 crayons. She gives each student 3 crayons. How many students get crayons? D Mr. Lee makes 18 birdhouses for a craft show. He sells all but 3 birdhouses. How many birdhouses did Mr. Lee sell? A B C D A librarian has 25 books. She puts an equal number of books on 5 shelves. How many books are on each shelf? (7-1) A 20 B 6 C 5 D 4 Topic 7 1 of 3

2 5. Andy wants to find Which missing factor equation can he use to help solve the problem? (7-3) A 18 3 n 5 6 B 6 3 n 5 18 C 18 2 n 5 6 D 18 1 n Which division sentence is shown by the repeated subtraction? (7-2) Zach has 21 flowers to put equally in 3 vases. How many flowers will he put in each vase? (7-1)? 21 flowers in all?? 8. Ginger has 32 photos. She puts 4 photos on each page of an album. How many pages of photos will Ginger fill in the album? (7-3) 8 pages 9. Write a story that could be solved with ? (7-5) Sample answer: Karim has 32 softballs. He puts an equal number of balls into each of 8 boxes. How many softballs does he put in each box? 7 flowers Topic 7 2 of 3

3 10. Pictured below are two trapezoids in different positions. Draw a shape that can be made by joining the two trapezoids. (7-6) Sample answer: 11. In 2010, the United States Mint began to issue America the Beautiful Quarters. Each year, quarters are released with national sites on them. New quarters for 5 different national sites are released each year. How many years will it take for the first 25 national sites to be released? Write a number sentence to solve. (7-2) 5 years; Jeff is using a multiplication table to find the value of n that makes the equation n true. His answer is 5. Do you agree? Explain. (7-3) No. Sample answer: , so A painting is covering up some of the tiles on the wall. The tiled wall is shaped like a rectangle. There are 28 square tiles on the whole wall. How many of the tiles are covered by the painting? (7-6) 12 tiles 14. Hayley has 4 rows of stickers with 3 stickers in each row. She wants to find the total number of stickers she has. She decides to use the equation n to show the problem. Is she correct? Explain. (7-4) Yes. Sample answer: The equation shows the total number of objects in an array. Topic 7 3 of 3

4 Mark the best answer. 1. Lisa has 15 buttons. She makes puppets that use 5 buttons each. Which equation shows how many puppets Lisa can make? (7-4) Topic 7 Test 3. Four students have 20 crayons to share. Which number sentence shows how many crayons each student will get? (7-1) A n B n C n D n 2. Which story could be solved with ? (7-5) A Carmen has 18 flowers. He puts 3 flowers in a vase. How many flowers are not in the vase? B Sandra buys 18 packs of baseball cards. Each pack has 3 cards. How many baseball cards does Sandra have? C Miss Reynolds has 18 crayons. She gives each student 3 crayons. How many students get crayons? D Mr. Lee makes 18 birdhouses for a craft show. He sells all but 3 birdhouses. How many birdhouses did Mr. Lee sell? A B C D A librarian has 25 books. She puts an equal number of books on 5 shelves. How many books are on each shelf? (7-1) A 20 B 6 C 5 D 4 Topic 7 1 of 3

5 5. Andy wants to find Which missing factor equation can he use to help solve the problem? (7-3) A 18 3 n 5 6 B 6 3 n 5 18 C 18 2 n 5 6 D 18 1 n Ginger has 32 photos. She puts 4 photos on each page of an album. How many pages of photos will Ginger fill in the album? (7-3) 9. Write a story that could be solved with ? (7-5) 6. Which division sentence is shown by the repeated subtraction? (7-2) Zach has 21 flowers to put equally in 3 vases. How many flowers will he put in each vase? (7-1) 21 flowers in all??? Topic 7 2 of 3

6 10. Pictured below are two trapezoids in different positions. Draw a shape that can be made by joining the two trapezoids. (7-6) 12. Jeff is using a multiplication table to find the value of n that makes the equation n true. His answer is 5. Do you agree? Explain. (7-3) 11. In 2010, the United States Mint began to issue America the Beautiful Quarters. Each year, quarters are released with national sites on them. New quarters for 5 different national sites are released each year. How many years will it take for the first 25 national sites to be released? Write a number sentence to solve. (7-2) 13. A painting is covering up some of the tiles on the wall. The tiled wall is shaped like a rectangle. There are 28 square tiles on the whole wall. How many of the tiles are covered by the painting? (7-6) 14. Hayley has 4 rows of stickers with 3 stickers in each row. She wants to find the total number of stickers she has. She decides to use the equation n to show the problem. Is she correct? Explain. (7-4) Topic 7 3 of 3

7 Division as Sharing Use counters or draw a picture to solve people, 4 rows How many people in each row? Practice marbles, 2 people How many marbles for each person? apples, 5 trees How many apples on each tree? books, 3 shelves How many books on each shelf? Complete each division sentence Explain It Ron and Pam each have 20 pennies. Ron will put his pennies into 4 groups. Pam will put her pennies into 5 groups. Who will have more pennies in each group? Explain. 8. There are 28 days in February. There are 7 days in a week. How many weeks are there in February? A 3 B 4 C 5 D 6 P 7 1

8 Division as Repeated Subtraction Use counters or draw a picture to solve pens 3 pens in each box How many boxes? students 3 students on each team How many teams? Practice stickers 5 stickers on each sheet How many sheets? leaves 6 leaves painted on each vase How many vases? 5. Number Sense What division sentence means the same as the following subtraction sentences? Tandem bicycles are ridden by 2 people. If 14 people rented tandem bicycles, how many bicycles were rented? 7. Explain It Tamara says that Is she correct? Explain. 8. Keisha has to carry 32 boxes to her room. She can carry 4 boxes on each trip. How many trips will she take? A 6 B 7 C 8 D 9 P 7 2

9 Finding Missing Numbers in a Multiplication Table Practice 7-3 Find the value for n that makes the equation true. Use a multiplication table = n = n = n = n = n = n = n = n = n 10. Mr. Bell had 24 colored markers to give equally to 6 students. How many markers did each student get? 11. A pet shop has 54 fish in 6 tanks. If there are an equal number of fish in each tank, how many fish are in each tank? 12. James has 36 tomato plants. If he plants 6 plants in a row, how many rows will he plant? 13. Critique Reasoning Hana uses a multiplication table to find the value of n in 49 7 = n. She says the answer is 6. Is she correct? Why or why not? 14. Enrico put 54 photographs into a scrapbook. He put 6 photographs on each page. How many pages did he fill? A 6 B 7 C 8 D 9 P 7 3

10 Problem Solving: Choose an Appropriate Equation Practice 7-4 Choose the equation that shows the problem. 1. Abby runs 3 miles 4 times a week. How many miles does she run in a week? A n B n C n D n 2. The school received a shipment of 45 newspapers. The newspapers will be shared equally by 5 classes. How many newspapers will each class get? A n B 5 3 n 5 45 C n D n Marco collects stamps in a scrapbook. So far, he has 36 stamps. He puts 9 stamps on a page. How many pages has he used? A n B n C 9 3 n 5 36 D n Write a different equation that could be used to show each problem. 4. Problem 1: 5. Problem 2: 6. Problem 3: 7. Model Mrs. Wu makes blueberry pancakes for the school breakfast. She makes 2 batches of pancakes. Mrs. Wu makes 24 pancakes in all. Write an equation to find how many blueberry pancakes are in each batch. P 7 4

Writing Division Stories Write a division story for each number sentence. Then use counters or draw a picture to solve. Practice 7-5 1. 54 4 6 5 2. 36 4 9 5 3. 42 4 7 5 4. 25 4 5 5 5.

11 Writing Division Stories Write a division story for each number sentence. Then use counters or draw a picture to solve. Practice There are 40 relatives at a party. There are 5 tables that each seat the same number of people. How many people can sit at each table? 6. A softball pitcher needs to get 3 outs in an inning. If a pitcher gets 21 outs, how many innings did she pitch? 7. Explain It There are 16 people at a party. They want to set up relay teams with exactly 3 people each. Will each person be on a team? Explain. P 7 5

12 Problem Solving: Use Objects and Draw a Picture Solve. Use objects or draw a picture. Practice Ron painted part of a tiled section of his bathroom floor. The whole section was shaped like a rectangle. There were 35 square tiles in the section. How many tiles were in each row? 2. Some syrup spilled on a checkerboard-style table. The syrup covered some of the tiles. There were 36 squares on the table. How many of the squares had syrup on them? 3. Dress rehearsal of the play was attended by 142 people. Opening night was attended by 238 people. How many people saw the two shows in all? 4. Carol and Deanna drove 320 miles altogether this weekend. They drove 196 miles on Sunday. How many miles did they drive on Saturday? 320 miles in all people in all Write a Problem Write and solve a real-world problem that you can solve by using objects or drawing a picture. P 7 6

10.5 Model with Arrays

? Name 10.5 Model with Arrays Essential Question How can you use arrays to solve division problems? Number and Operations 3.4.H, 3.4.K Algebraic Reasoning 3.5.B MATHEMATICAL PROCESSES 3.1.C, 3.1.E Investigate