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4 Contents Chapter 1 Two-Dimensional Figures and Patterns 1.1 Introducing Think Math!...P1 1.2 Examining Two-Dimensional Figures...P2 1.3 Sorting by Attributes...P3 1.4 Sorting by More Than One Attribute...P4 1.5 Counting Differences...P5 1.6 Repeating and Growing Patterns...P6 Chapter 2 Number Lines and Time 2.1 Introducing the Number Line...P7 2.2 Jumping on the Number Line...P8 2.3 Recording Jumps as Addition and Subtraction...P9 2.4 Relating Addition and Subtraction... P Comparing Numbers on the Number Line... P Comparing Numbers and Quantities... P Investigating Time and Events... P Telling Time to the Hour... P Ordinal Numbers and the Calendar... P15 Chapter 3 Skip-Counting and Money 3.1 Introducing the Penny... P Counting with Groups... P Introducing the Nickel... P Counting Money... P Making Amounts in Different Ways...P20 Chapter 4 Exploring Addition and Subtraction 4.1 Introducing the Cross Number Puzzle... P Using Cross Number Puzzles to Add...P Exploring Missing Addends...P with Cross Number Puzzles...P Sums of 10...P Addition Stories...P Subtraction Stories...P27 Chapter 5 Working with Tens 5.1 Ten and Some More...P Lots of Tens and Some More...P Using Dimes and Pennies...P Tens and Time... P Tens on the Number Line...P Using the Number Line to Solve Problems... P Modeling Numbers in Different Ways...P34 Chapter 6 Data and Probability 6.1 Collecting and Tallying Data...P Making Graphs with Objects and Pictures...P Making Graphs with Pictures and Symbols... P Bar Graphs and Probability...P Investigating Probability...P39 iii

5 Contents Chapter 7 Working with Larger Numbers 7.1 Identifying Rules...P Identifying Rules with Larger Numbers... P Adding Ten on the Number Line Hotel...P Subtracting Ten on the Number Line Hotel...P Adding and Subtracting with Larger Numbers...P Modeling Numbers to 99...P Numbers to 100 and Beyond...P Connecting Numbers and Words... P Introducing the Quarter...P48 Chapter 8 Doubling, Halving, and Fractions 8.1 Mirrors and Folding...P Doubling Your Money...P Sharing to Find Half... P Exploring One Half...P Wholes and Halves...P Halfway Between Whole Numbers...P Half of a Half...P Thirds...P56 Chapter 9 Modeling Addition and Subtraction 9.1 Exploring Addition with Cuisenaire Rods... P Recording Addition Sentences...P Exploring Input/Output Tables...P Using Input/Output Tables...P Making Fact Families...P Fact Families and Stair-Step Numbers...P Connecting Stories and Fact Families...P Two-Sentence Fact Families...P64 Chapter 10 Maps, Grids, and Geometric Figures 10.1 Exploring Lines and Intersections...P Drawing Lines and Intersections...P Exploring Direction on a Map...P Finding and Following Paths on a Grid...P Paths and Figures on a Grid...P Exploring Symmetry...P Connecting Points to Make Figures...P Investigating Rectangles...P Recording and Graphing Rectangles...P Finding Congruent Figures... P Exploring Three-Dimensional Figures...P75 iv

6 Chapter 11 Comparing Numbers, Temperatures, and Weights 11.1 Comparing Groups...P Comparing Numbers and Temperatures...P Using Place Value to Compare Numbers...P Ordering Numbers...P Changing Both Sides of a Sentence...P Comparing and Ordering Weights...P Changing Both Pans of a Balance...P82 Chapter 12 Length, Area, and Capacity 12.1 Measuring Length with Nonstandard Units...P Comparing and Ordering Lengths...P Measuring with a Centimeter Ruler...P Measuring with an Inch Ruler...P Comparing Figures by Size...P Exploring Area...P Finding Area on a Grid...P Comparing Areas...P Measuring Boxes and Rectangles...P Introducing Capacity with Nonstandard Units...P Measuring Capacity with Standard Units...P93 Chapter 13 Making and Breaking Numbers 13.1 Making Even and Odd Numbers...P Making Numbers as Sums of 1, 2, 4, and 8...P Combining Triangular Numbers...P Making Sums of 60...P Sums to 12...P Sums to 15...P Sums to 16...P Sums to 18...P Sums to 20...P102 Chapter 14 Extending Addition and Subtraction 14.1 Adding Number Sentences...P Making Addition Easier...P Modeling Number Sentences and Stories...P Making Subtraction Easier...P Subtraction That Changes the Tens Digit... P Change from a Dollar...P Is This Story Reasonable?...P Solving Puzzles with Many Solutions... P110 v

7 Contents Chapter 15 Exploring Rules and Patterns 15.1 Identifying Rules... P Sorting Rules... P Undoing Rules... P Rules with More Than One Input... P Conversion Rules... P Skip-Counting with Money... P Creating Figures and Patterns... P Patterns with Skip-Counting... P Relating One-Color Trains... P119 vi

8 These pages provide additional practice for each lesson in the chapter. The exercises are used to reinforce the skills being taught in each lesson. Book

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10 Introducing Think Math! What numbers are missing? Lesson 1 Chapter 1 Book P1

11 Lesson 2 Examining Two-Dimensional Figures Color green. Color blue. Color yellow. Draw an X on. Since squares are rectangles, children may also color them green. P2 Book Chapter 1

12 Sorting by Attributes Cross out the figure that does not belong. 1. Lesson Chapter 1 Book P3

13 Sorting by More Than One Attribute Draw each figure. 1. large blue square 2. small yellow triangle Lesson 4 Answers will vary. Possible answers are given. 3. small red circle 4. large blue circle 5. small yellow rectangle 6. large red triangle P4 Book Chapter 1

14 Counting Differences Circle the figure that is different in one way. 1. Lesson 5 2. Circle the figure that is different in two ways Chapter 1 Book P5

15 Repeating and Growing Patterns Which figure is missing? 1. Lesson P6 Book Chapter 1

16 Introducing the Number Line Continue each pattern. 1. Lesson Chapter 2 Book P7

17 Jumping on the Number Line Continue each pattern. 1. Lesson P8 Book Chapter 2

18 Recording Jumps as Addition and Subtraction Draw the jumps. Find the missing numbers Lesson Chapter 2 Book P9

19 Relating Addition and Subtraction Draw the jumps. Find the missing numbers Lesson P10 Book Chapter 2

20 Lesson 5 Comparing Numbers on the Number Line Write,, or Chapter 2 Book P11

21 Comparing Numbers and Quantities Write,, or Lesson P12 Book Chapter 2

22 Investigating Time and Events 1. Draw something you do in the morning. Answers will vary. Possible drawing: getting dressed Lesson 7 2. Draw something you do in the evening. Possible drawing: eating dinner 3. Order the events from least amount of time to most amount of time. Write 1, 2, and 3 to show the order. Possible answer given. Sleep Brush hair Eat lunch Chapter 2 Book P13

23 Telling Time to the Hour What time is it? Lesson P14 Book Chapter 2

24 Ordinal Numbers and the Calendar November Lesson 9 Sunday Monday Tuesday Wednesday Thursday Friday Saturday green orange yellow 1. Color the third Wednesday orange. 2. Color the fourth Tuesday yellow. 3. Color the sixth day of the month green. 4. What day is the tenth day of the month? Friday 5. What day is the second day of the month? Thursday Chapter 2 Book P15

25 Introducing the Penny What is the value? Lesson P16 Book Chapter 3

26 Counting with Groups How many are there? 1. Lesson Chapter 3 Book P17

27 Introducing the Nickel Lesson 3 is a nickel, worth 5. is a penny, worth 1. What is the total value? P18 Book Chapter 3

28 Counting Money Lesson 4 is a penny, worth 1. is a nickel, worth 5. How many coins are there? What is the value? coin 1 coin 2 coins coins 2 coins 3 coins coins 4 coins 4 coins Chapter 3 Book P19

29 Name Lesson 5 Making Amounts in Different Ways is a nickel, worth 5. is a penny, worth 1. Color to show the amount P20 Book MNENL07AWK1X_PB_C03_ _V5.indd P20 3. Chapter 3 12/1/06 4:03:07 PM

30 Introducing the Cross Number Puzzle What numbers are missing? Lesson Chapter 4 Book P21

31 Using Cross Number Puzzles to Add Write a number sentence for each row. 1. Lesson P22 Book Chapter 4

32 Exploring Missing Addends What numbers are missing? Lesson Chapter 4 Book P23

33 with Cross Number Puzzles What numbers are missing? Lesson P24 Book Chapter 4

34 Sums of 10 Complete each puzzle. Use the puzzle to complete the number sentence. 1. Lesson Chapter 4 Book P25

35 Addition Stories Solve each problem. Show your work with pictures, numbers, or words. 1. Mia drew 4 circles and 2 squares. How many shapes did she draw? 6 shapes Lesson 6 Ways of showing work will vary children were at a party. Then 3 more joined them. How many children are at the party now? 8 children 3. All fish in a tank are blue or gold. 7 fish are blue. 3 fish are gold. How many fish are in the tank? 10 fish P26 Book Chapter 4

36 Subtraction Stories Solve each problem. Show your work with pictures, numbers, or words. 1. There are 6 ducks in a pond. 3 swim away. How many ducks are left? 3 ducks Lesson 7 Ways of showing work will vary. 2. Rita has 4 sweaters. 2 have zippers. The rest have buttons. How many sweaters have buttons? 2 sweaters 3. Lou takes out 9 books from the library. Kim takes out 4 books. How many more books did Lou take out than Kim? 5 more books Chapter 4 Book P27

37 Ten and Some More What numbers are missing? Lesson P28 Book Chapter 5

38 Lots of Tens and Some More Write the missing numbers. 1. Lesson Chapter 5 Book P29

39 Using Dimes and Pennies is a dime, worth 10. is a penny, worth 1. Lesson 3 How many coins are there? What is the value? coins 42 6 coins coins What numbers are missing? 7 coins 43 P30 Book Chapter 5

40 Tens and Time What time is it? 1. Lesson Chapter 5 Book P31

41 Tens on the Number Line Write the numbers to match each jump. 1. Lesson Draw the jump. Complete the number sentence P32 Book Chapter 5

42 Lesson 6 Using the Number Line to Solve Problems What numbers match the jump? Chapter 5 Book P33

43 Modeling Numbers in Different Ways What is the number? Lesson P34 Book Chapter 5

44 Collecting and Tallying Data Lesson 1 Ana asked her classmates if they bring lunch to school. 1. Use tally marks to show the data. Yes No 2. How many classmates bring lunch to school? Do you bring lunch to school? no yes no no no no yes yes no yes yes yes no no yes yes yes 9 classmates 3. How many classmates do not bring lunch to school? 8 classmates 4. How many classmates did Ana ask? 17 classmates 5. How many more classmates bring lunch than do not bring lunch? 1 more classmate Chapter 6 Book P35

45 Making Graphs with Objects and Pictures Jody saw some animals on a nature hike. 1. She saw 2 deer. 2. Birds are the animals she saw the most. 3. She saw 3 raccoons. 4. She saw 11 animals in all. Shawn sorts his toy cars by size. Lesson 2 5. There are 7 small cars. 6. The size with the fewest cars is medium. Possible answer: small, medium; small, large; large, medium 7. There are more cars than cars. 8. There are 15 cars in all. P36 Book Chapter 6

46 Making Graphs with Pictures and Symbols Some children chose their favorite season. The table shows the results. 1. Use the data in the table to complete the graph. Our Favorite Seasons summer Lesson 3 fall winter spring 2. Which season did most children choose? summer 3. How many more children chose summer than winter? 2 more children 4. How many children chose fall or winter? Explain how you know. 8; I added the numbers for fall and winter to find the total: Chapter 6 Book P37

47 Bar Graphs and Probability Brooke and Evan played the Number Race game. 1. What is the winning number? 7 2. How many more times did Brooke and Evan toss the number 7 than the number 3? 4 more times Lesson 4 3. How many times did Brooke and Evan toss the number cubes? 27 times 4. How did you find the answer to Problem 3? Possible answer: I counted all of the shaded boxes because each box stands for 1 sum, or 1 toss. P38 Book Chapter 6

48 Investigating Probability Is it possible or impossible? Draw lines to match. 1. It will rain tomorrow. 2. The school lunch will have milk. 3. A cow will jump over the moon. Lesson 5 possible impossible 4. Draw a picture to show an impossible event. Drawings will vary. Is it certain, likely, or unlikely? Draw lines to match. 5. A penny is worth One apple costs more than 3 apples. certain likely 7. Three apples cost more than 1 apple. unlikely Chapter 6 Book P39

49 Identifying Rules What is the rule? 1. Lesson 1 add 1 2. subtract 3 Draw the missing jumps. Complete each table Start Land Start Land P40 Book Chapter 7

50 Identifying Rules with Larger Numbers Draw the missing jumps. Complete each table. 1. Start Land Lesson 2 2. Start Land Start Land Chapter 7 Book P41

51 Lesson 3 Adding 10 on the Number Line Hotel What is the missing number? Draw the missing jump P42 Book Chapter 7

52 Lesson 4 Subtracting 10 on the Number Line Hotel Chapter 7 Book P43

53 Adding and Subtracting with Larger Numbers What numbers are missing? Lesson 5 Use the Number Line Hotel to help. 1. Start Jump Forward Land Start Jump Back Land Start Jump Back Land P44 Book Chapter 7

54 Modeling Numbers to 99 Lesson 6 What is the number? Chapter 7 Book P45

55 Numbers to 100 and Beyond What numbers are missing? Lesson P46 Book Chapter 7

56 Connecting Numbers and Words Write each number. Lesson 8 1. thirteen eighteen forty-three twenty-six thirty-nine sixty-two fifty-seven seventy-five ninety-one twelve 12 Write each word name fifty-seven twenty-five thirty-two fifty-three Chapter 7 Book P47

57 Introducing the Quarter What is the value? Lesson 9 is a quarter. is a dime. is a nickel. is a penny P48 Book Chapter 7

58 Mirrors and Folding Draw the mirror image Lesson Draw a line to show halves. Answers may vary. Chapter 8 Book P49

59 Doubling Your Money Lesson 2 Match. Complete each addition sentence. 1. If one sticker costs 8, then how much do two stickers cost? 2. If one sticker costs 12, then how much do two stickers cost? 3. If two stickers cost 12, then how much does one sticker cost? 4. If two stickers cost 24, then how much does one sticker cost? 5. If one sticker costs 6, then how much do two stickers cost? P50 Book Chapter 8

60 Sharing to Find Half Complete each sentence. Use counters to help. 1. Two friends share 10 crayons equally. Lesson 3 Each friend gets 5 crayons 2. Two friends share 16 crayons equally. Each friend gets 8 crayons. 3. Two friends share 30 crayons equally. Each friend gets 15 crayons. 4. Two friends share 50 crayons equally. Each friend gets 25 crayons. 5. Two friends share 26 crayons equally. Each friend gets 13 crayons. Chapter 8 Book P51

61 Exploring One Half Trina is half as old as Tracy. Complete the table. Lesson 4 Trina Tracy 1. 1 year 2 years 2. 5 years 10 years 3. 9 years 18 years years 26 years years 30 years years 42 years years 50 years P52 Book Chapter 8

62 Wholes and Halves How many apples are there? Lesson _ _ _ _ Write the numbers above in order from smallest to largest. 0 1 _ _ _ _ 2 Chapter 8 Book P53

63 Halfway Between Whole Numbers Complete the number line. Then circle the number in the middle. 1. Lesson 6 2. What number is in the middle? Use the number line to help P54 Book Chapter 8

64 Half of a Half Color to show the fraction Lesson 7 Arrangements may vary. 1_ 4 1_ 2 3_ _ 2 2_ 4 1_ _ 4 1_ 2 2_ 4 Chapter 8 Book P55

65 Thirds Color to show the fraction Lesson 8 Arrangements may vary. 2_ 3 1_ 3 1_ _ 3 3_ 3 2_ _ 4 3_ 4 1_ 3 P56 Book Chapter 8

66 Exploring Addition with Cuisenaire Rods Color the rods. Complete each addition sentence. Lesson 1 If W 1, then Chapter 9 Book P57

67 Recording Addition Sentences Color the rods. Complete each addition sentence. Lesson 2 If W 1, then P58 Book Chapter 9

68 Exploring Input/Output Tables What is missing? Lesson 3 in out in out in out :00 1: :00 2: :30 4: :00 11: :00 8: $1.00 or :30 5:30 7:30 6:30 Chapter 9 Book P59

69 Using Input/Output Tables What is missing? 1. Lesson 4 in out in out in out P60 Book Chapter 9

70 Making Fact Families What is the fact family? Lesson Order may vary. Chapter 9 Book P61

71 Lesson 6 Fact Families and Stair-Step Numbers What is the fact family? Order may vary for Problems P62 Book Chapter 9

72 Connecting Stories and Fact Families What is the fact family? 1. Spot has 6 toys. 2 are balls. The others are ropes. Lesson All of Jane s hats are red or blue. 4 are red. 5 are blue. Order may vary for Problems 2 and fish are gold The rest are blue. There are 11 fish Chapter 9 Book P63

73 Two-Sentence Fact Families What is the fact family? Lesson 8 Order may vary for Problems 1 and Liz has 6 flowers. 3 are red. The rest are yellow Adam and Pete have the same number of marbles. Together they have 12 marbles P64 Book Chapter 9

74 Exploring Lines and Intersections Draw dots to show where the lines intersect Lesson 1 Complete each table Chapter 10 Book P65

75 Drawing Lines and Intersections Draw dots to show where the lines intersect. Complete each table Lesson P66 Book Chapter 10

76 Exploring Direction on a Map Find two paths from A to B on each map. North Lesson 3 Answers may vary West 4. East South Chapter 10 Book P67

77 Finding and Following Paths on a Grid Start at the dot. Draw each path Lesson 4 S E E E N E W N E N W N W S E N N W S W N W N N E P68 Book Chapter 10

78 Paths and Figures on a Grid Start at the dot. Draw each path. Lesson 5 Chapter 10 Book P69

79 Exploring Symmetry Draw the other half Lesson P70 Book Chapter 10

80 Connecting Points to Make Figures Lesson 7 1. Draw lines to connect the points. A and C B and D B and H A and G G and E H and F D and F C and E 2. How many triangles did you make? 8 triangles 3. How many squares did you make? 2 squares Chapter 10 Book P71

81 Investigating Rectangles Lesson 8 Use the figures above to complete the table. Figure A B C D E F Number of P72 Book Chapter 10

82 Recording and Graphing Rectangles 1. How many are in each figure? Lesson 9 2. Use the figures above to complete the table. Figure A B C D E F Number of Chapter 10 Book P73

83 Finding Congruent Figures Which figure does not have the same size and shape? 1. Lesson P74 Book Chapter 10

84 Lesson 11 Exploring Three-Dimensional Figures What is the shape of each object? sphere cylinder rectangular prism cone 5. cylinder 6. rectangular prism 7. How are a cylinder and a sphere different? A cylinder has two flat sides. A sphere has no flat sides. Chapter 10 Book P75

85 Comparing Groups How many are there? Write,, or Lesson 1 5 < What is missing? Answers may vary. Possible answers given P76 Book Chapter 11

86 Comparing Numbers and Temperatures What numbers are missing? Write,, or. 1. Lesson 2 21 < Write or F 76F 76F 81F 29F 10F 21F 10F 81F 67F 21F 29F Chapter 11 Book P77

87 Using Place Value to Compare Numbers What numbers are shown? Write,, or. 1. Lesson 3 2. Write,, or P78 Book Chapter 11

88 Ordering Numbers What is missing? Write,, or. 1. Lesson Write the numbers. Then order the numbers. 3. Chapter 11 Book P79

89 Changing Both Sides of a Sentence What is missing? 1. Lesson Make your own. Answers will vary. P80 Book Chapter 11

90 Comparing and Ordering Weights Lesson 6 Write,, or basketball > apple cherries apple napkin apple napkin cherries 5. Circle the lightest. 6. Circle the heaviest. Chapter 11 Book P81

91 Changing Both Pans of a Balance What are the missing symbols and numbers? 1. Lesson 7 and 6 oz > 2 oz 4 oz 4 oz 6 oz 4 oz 2 oz 4 oz so 10 oz 6 oz 2. and so 8 oz 12 oz 6 oz 6 oz 8 oz 6 oz 12 oz 6 oz 2 oz 6 oz P82 Book Chapter 11

92 Measuring Length with Nonstandard Units About how long is each line? Use paper clips to measure. 1. A Lesson 1 Answers will depend upon the size of the paper clip. about paper clips 2. B about paper clips 3. C about paper clips 4. D 5. E about about paper clips paper clips 6. Which line is the longest? Line D Chapter 12 Book P83

93 Comparing and Ordering Lengths 1. Color the rods. Lesson 2 Write,, or. 2. red < blue 3. yellow black 4. red white 5. blue dark green 6. purple yellow 7. black brown 8. red purple red yellow 9. blue black brown blue P84 Book Chapter 12

94 Measuring with a Centimeter Ruler Use a centimeter ruler. Draw each line centimeters long Lesson centimeters long 3. a little more than 14 centimeters long 4. a little less than 5 centimeters long 5. Draw a square. Make each side 3 centimeters long. Chapter 12 Book P85

95 Measuring with an Inch Ruler Draw the lines. Measure to the nearest inch. Lesson 4 Line Length A to B B to C C to D D to E about 1 inch about 3 inches about 3 inches about 3 inches E to A about 2 inches P86 Book Chapter 12

96 Comparing Figures by Size Lesson 5 Complete the table. Largest In-Between Smallest Square G E B Circle K I D Triangle C F L Hexagon A H J Chapter 12 Book P87

97 Exploring Area Connect the dots. Measure to the nearest inch. 1. Line Length Lesson 6 A to B about 4 inches B to C about 3 inches C to A about 5 inches 2. Line Length D to E about 2 inches E to F about 3 inches D to F about 2 inches 3. Which triangle covers more area? the top triangle (with corners A, B, and C) P88 Book Chapter 12

98 Finding Area on a Grid What is the area of each shaded figure? Lesson Chapter 12 Book P89

99 Comparing Areas 1. What is the area of each figure? Lesson 8 2. List the figures in order from smallest to largest area. Figure N R Q P M O Area P90 Book Chapter 12

100 Measuring Boxes and Rectangles What is the length of each side? 1. Lesson Will Rectangle A fit inside Rectangle B? no Will Rectangle B fit inside Rectangle A? yes Chapter 12 Book P91

101 Introducing Capacity with Nonstandard Units Lesson 10 Sean uses scoops to measure how much each container will hold. 1. Which container holds the most? pot 2. How many more scoops does the carton hold than the jar? 3 more scoops 3. List the containers in order from holds the least to holds the most. teacup jar carton pot P92 Book Chapter 12

102 Lesson 11 Measuring Capacity with Standard Units Match to the best measurement in real life gallons inches 3. 1 pint inches 2 quarts Chapter 12 Book P93

103 Making Even and Odd Numbers Draw and color rods to show each sum. Is the sum even or odd? Lesson 1 even odd even odd Draw a picture for each. Is the sum even or odd? 3. odd even odd 4. odd odd even P94 Book Chapter 13

104 Making Numbers as Sums of 1, 2, 4, and 8 What number does each rod show? Lesson What number sentence does each train show? Chapter 13 Book P95

105 Combining Triangular Numbers How many dots are in the triangle? Lesson 3 6 What is the fact family? 5. 6.!"#$%&'()*+",-.-/*01-+("2-+(-34"5+&6 P96 Book Chapter 13

106 Making Sums of 60 Complete each Cross Number Puzzle. Use multiples of 10. Answers may vary Lesson 4 Continue the pattern. Use the numbers to complete the Cross Number Puzzles below. 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60 Answers for the Cross Number Puzzles may vary Chapter 13 Book P97

107 Sums to 12 Draw rods to show the sum. What is the sum? Lesson What number sentence does each train show? P98 Book Chapter 13

108 Sums to 15 What number sentence does each train show? Lesson Draw dots to show each addend. Write the missing numbers Chapter Book P99

109 Sums to 16 Write the missing numbers. 1. Lesson 7 Complete each Cross Number Puzzle P100 Book Chapter 13

110 Sums to 18 Write the missing numbers. 1. Lesson The sum is 1 more than The sum is 1 less than The sum is 1 more than The sum is 1 less than Chapter 13 Book P101

111 Sums to 20 Lesson 9 Draw dots to show each number. Then find the sum What is the sum? P102 Book Chapter 13

112 Adding Number Sentences Write the missing numbers and signs Lesson Chapter 14 Book P103

113 Making Addition Easier Write the missing numbers and signs Lesson = P104 Book Chapter 14

114 Modeling Number Sentences and Stories Write the number sentence and answer the question. Kirit built 3 birdhouses in 4 days. Then he built 12 more birdhouses in 2 weeks. 1. How many birdhouses did Kirit build? Lesson birdhouses 2. How many days did it take? days Katrina baked 12 muffins in 30 minutes. Then she baked 18 more muffins in 1 hour. 3. How many muffins did Katrina bake? muffins 4. How many minutes did it take? minutes Chapter 14 Book P105

115 Making Subtraction Easier Draw the jump. Complete the number sentence Lesson Write a number sentence and answer the question. 5. Marita had 68. She spent 1 dime on a whistle. How much money did she have left? P106 Book Chapter 14

116 Subtraction That Changes the Tens Digit Draw the jump. Complete the number sentence Lesson Write the number sentence and answer the question. 5. It was 65F outside at noon. It was 6F cooler after school. What was the temperature after school? F Chapter 14 Book P107

117 Change from a Dollar Write the missing amounts. Use base-ten blocks to help. 1. Ryan spent this money. Lesson 6 7 He paid with a dollar bill. He got 93 change. 2. Mika spent this money. 47 She paid with a dollar bill. She got 53 change. 3. This is my change from $1. 4. This is my change from $ I spent 85. I spent 96. P108 Book Chapter 14

118 Is This Story Reasonable? Lesson 7 Solve. Is the story reasonable? Circle yes or no. 1. Josh made 14 peanut butter sandwiches and 15 cheese sandwiches for his lunch. Josh made 29 sandwiches for lunch. Is this story reasonable? yes no 2. Chita ate twice as many peaches as her brother. Her brother ate 2 peaches in one day. Chita ate 4 peaches in one day. Is this story reasonable? yes no 3. Write a reasonable story for Possible story: There were 18 children at the park. Seven children walked to the pond. 11 children were still at the park. Chapter 14 Book P109

119 Solving Puzzles with Many Solutions Solve each puzzle. 1. Answers may vary. 2. Lesson 8 3. Find two ways to solve the puzzle. Answers may vary. P110 Book Chapter 14

120 Identifying Rules What is missing? What is the rule? 1. Lesson 1 in out The rule is add Possible answer given. in dog cat star plant bike out o a t l i The rule is the second letter of the word. Chapter 15 Book P111

121 Sorting Rules What is missing? Possible answers given. Lesson 2 in out in out number of nickels out 36 no 21 no 5 no 68 no 52 yes 9 yes 81 yes 73 yes 8 yes 22 no 41 yes 7 no 45 yes 53 yes 17 no 5 no 3 no 4 no 72 no 96 yes 10 yes P112 Book Chapter 15

122 Undoing Rules Write the missing numbers. What is the rule? Lesson 3 1. in out The rule is add in out The rule is subtract Do the rules undo each other? Explain. The rules undo each other. If you put a number in the first machine, you could put the output in the second machine to get your number back. Chapter 15 Book P113

123 Rules with More Than One Input Write the missing numbers. 1. Lesson 4 Possible answers given. in in out in in in out P114 Book Chapter 15

124 Conversion Rules Write the missing numbers. 1. Lesson 5 Number of quarts Number of cups Number of quarts Number of pints Chapter 15 Book P115

125 Skip-Counting with Money Lesson 6 How much will the blocks cost? Emily bought half as many as. She spent 12. How many did she buy? 1 and 2 7. Henry bought 5 blocks. They were all the same. They cost 25. Draw the type of block. P116 Book Chapter 15

126 Creating Figures and Patterns Lesson 7 Complete each table. 1. I am making snow globes. Number of globes Cost of Cost of Total Cost I am making space ships. Number of rocket ships Cost of Cost of Cost of Total Cost Chapter 15 Book P117

127 Patterns with Skip-Counting Skip-count on the grids below. 1. Mark jumps of 5 with an X. Mark jumps of 9 with an O. Lesson Where do the jumps meet? Find Mark jumps of 8 with an X. Mark jumps of 4 with an O Where do the jumps meet? Find. 8, 16, 24, 32, 40 P118 Book Chapter 15

128 Relating One-Color Trains Write the missing numbers. Lesson 9 Answers may vary for Problems 3 to 5. Chapter 15 Book P119