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Chapter 3 thirty-nine P39
Chapter
3
Dear Family,My class started Chapter 3 this week. In this chapter, I will learn about addition strategies such as counting on, adding doubles, and adding in any order.
Love,
Vocabulary
doubles Two equal groups make a doubles fact.
2 + 2 = 4
doubles plus one 2 + 2 = 4, so 2 + 3 is 1 more, or 5.
2 + 3 = 5
Home Activity
Have your child find objects that show doubles facts. For example, he or she may find a pair of shoes to show 1 + 1, a carton of eggs to show 6 + 6, or a six-pack of juice cans to show 3 + 3. Ask your child to say those doubles facts.
Add another item to one of the groups, and have your child name the doubles plus one fact.
LiteratureLook for these books in a library. Point out examples of doubles and counting on facts in the pictures.
12 Ways to Get to 11by Eve Merriam.Aladdin, 1996.
Two of Everything: A Chinese Folktaleby Lily Toy Hong. Albert Whitman and Company, 1993.
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P40 forty
12 Ways to Get to 11por Eve Merriam. Aladdin, 1996.
LiteraturaBusque estos libros en una biblioteca. Señale ejemplos de operaciones de dobles y de contar uno hacia delante en las imágenes.
Actividad para la casa
Pida a su hijo que encuentre objetos que muestren operaciones de dobles. Por ejemplo, puede hallar un par de zapatos para mostrar 1 + 1, una caja de huevos para mostrar 6 + 6 o una caja de 6 latas de jugo para mostrar 3 + 3. Pídale a su hijo que le diga cuáles son las operaciones de dobles.
Agregue otro artículo a uno de los grupos y pida a su hijo que nombre la operación de dobles más uno.
Vocabulario
dobles Dos grupos iguales forman una operación de dobles.
2 + 2 = 4
dobles más uno 2 + 2 = 4, por lo tanto 2 + 3 es 1 más o 5.
2 + 3 = 5
Querida familia:Mi clase comenzó el Capítulo 3 esta semana. En este capítulo, aprenderé estrategias de suma como contar hacia adelante, sumar dobles y sumar en cualquier orden.
Con cariño,
Capítulo
3
Two of Everything: A Chinese Folktalepor Lily Toy Hong.Albert Whitman and Company, 1993.
Problem SolvingProblem Solving
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Name Lesson 3.1
Chapter 3 forty-one P41
Algebra • Add in Any Order
Add. Change the order of the addends. Add again.
1. 2. 3.
4. 5. 6.
6 + 5
]
11
6 + 3
]
9
9 + 8
]
17
8 + 1
]
9
4 + 7
]
11
7 + 3
]
10
B
8
+ B
9
_
B
17
B
5
+ B
6
_
B
11
B
3
+ B
6
_
B
9
B
1
+ B
8
_
B
9
B
7
+ B
4
_
B
11
B
3
+ B
7
_
B
10
5 — 1 4 — 5 9 —
4 — 1 5 — 5 9 —
Write two addition sentences you can use to solve the problem.
7. Camila has 5 pennies.Then she finds 4 more pennies. How many pennies does she have now?
COMMON CORE STANDARD—1.OA.3 Understand and apply properties of operations and the relationship between addition and subtraction.
Order may vary.
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P42 forty-two
1. What is another way to write 7 + 6 = 13?
6 + 7 = 13 —
2. What is another way to write 6 + 8 = 14?
8 + 6 = 14 —
Spiral Review (1.OA.1, 1.OA.6)
3. What is the sum? Write the number.
4. How many nests are there? Write the number.
2 nests and 1 more nest 3 — nests
Lesson Check (1.OA.3)
4 + 3
_
7
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Count On
Circle the greater addend. Count on to find the sum.
Lesson 3.2
Chapter 3 forty-three P43
1. 2. 1 + 7
]
8
3. 3 + 9
]
12
4. 5 + 3
]
8
5. 7 + 3
]
10
6. 3 + 4
]
7
7. 6 + 2
]
8
8. 1 + 8
]
9
8 + 2
]
10
Draw to solve.Write the addition sentence.
9. Jon eats 6 crackers.Then he eats 3 more crackers. How many crackers does he eat?
6 — + 3 — = 9 — crackers
COMMON CORE STANDARD—1.OA.5 Add and subtract within 20.
Possible drawing is shown. Order of the addends may vary.
6 7 8 9
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P44 forty-four
Lesson Check (1.OA.5)
1. Count on to solve 5 + 2.
Write the sum.
7 —
2. Count on to solve 1 + 9.
Write the sum.
10 —
Spiral Review (1.OA.1)
3. What does the model show?
3 — + 3 — = 6 —
4. 4 ducks swim in the pond. 2 more ducks join them. How many ducks are in the pond now?
Complete the model and the number sentence.
4 + 2 = 6 —
6
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yHANDS ONLesson 3.3
Chapter 3 forty-five P45
Write a doubles fact to solve.
7. There are 16 crayons in the box.Some are green and some are red. The number of green crayons is the same as the number of red crayons.
16 — = 8 — + 8 —
Add Doubles
Use . Draw to show your work.Write the sum.
1. 4 + 4
]
8
2. 6 + 6
]
12
3. 3 + 3
]
6
4. 8 + 8
]
16
5. 5 + 5
]
10
6. 7 + 7
]
14
COMMON CORE STANDARD—1.OA.6 Add and subtract within 20.
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P46 forty-six
Lesson Check (1.OA.6)
1. Writeadoublesfactwiththesumof18.
9 — + 9 — = 18
2. Writeadoublesfactwiththesumof12.
6—+ 6—=12
Spiral Review (1.OA.1, 1.OA.3)
3. Whatisthesumof3and2?
Drawthe .Writethesum.
3—+ 2—= 5—
4.Drawcirclestoshowthenumbers.
Writethesum.
4 + 0= 4—
Check children’s drawing. Drawing
should show 3 cubes and 2 cubes.
DO NOT EDIT--Changes must be made through “File info” CorrectionKey=B
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Chapter 3 forty-seven P47
Solve. Draw or write to explain.
9. Bo has 6 toys. Mia has 7 toys. How many toys do they have?
13 — toys
Use Doubles to Add
Use . Make doubles. Add.
1.
5 + 6
5 — 1 5 — 1 1 —
So, 5 + 6 = 11 — .
2.
9 + 8
1 — 1 8 — 1 8 —
So, 9 + 8 = 17 — .
3. 8 + 7 = 15 — 4. 6 + 5 = 11 — 5. 7 + 6 = 13 —
6. 4 + 5 = 9 — 7. 7 + 8 = 15 — 8. 8 + 9 = 17 —
Use doubles to help you add.
COMMON CORE STANDARD—1.OA.6 Add and subtract within 20.
7
25
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P48 forty-eight
Lesson Check (1.OA.6)
1. Usedoublestofindthesumof7+8.
Writethenumbersentence.
7 —+ 7 —+ 1 —=15 —
Spiral Review (1.OA.1)
2. Circlethepartyoutakefromthegroup.Crossitout.Thenwritethedifference.
8−6= 2 —
3. Thereare7graykittens.2kittensareblack.Howmanyfewerblackkittensaretherethangraykittens?
Usethebarmodeltosolve.
Thenwritethenumbersentence.
7 —− 2 —= 5 —
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Chapter 3 forty-nine P49
1. 7 + 8 = 15 — 2. 6 + 7 = 13 —
3. 4 + 3 = 7 — 4. 2 + 1 = 3 —
5. 8 + 9 = 17 — 6. 3 + 2 = 5 —
7. 5 + 6 = 11 — 8. 5 + 4 = 9 —
9. Andy writes an addition fact. One addend is 9. The sum is 17. What is the other addend? Write the addition fact.
9 — + 8 — = 17
Doubles Plus 1 and Doubles Minus 1
Add. Write the doubles fact you used to solve the problem.
— C— C—
— C— C—
— C— C—
— C— C—
— C— C—
— C— C—
— C— C—
— C— C—
COMMON CORE STANDARD—1.OA.6 Add and subtract within 20.
Doubles fact used will vary.
9 + 8 = 17or
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P50 fifty
Lesson Check (1.OA.6)
1. Use the picture. Write a doubles plus one number sentence.
2 — + 2 — + 1 —
2. Which doubles fact helps you solve 8 + 7 = 15? Write the number sentence.
7 — + 7 — + 1 —
Spiral Review (1.OA.1)
3. There are 7 large dogs and 2 small dogs. How many dogs are there?
Use to solve. Draw to show your work. Write the number sentence and how many.
9 — dogs 7 — + 2 — = 9 —
4. What is the sum of 2 and 1 more?Draw the . Write the sum.
3 — 2 + 1 = 3 —
Doubles fact used will vary.
Check children’s drawings. Drawing should show 2 cubes and 1 cube.
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Chapter 3 fifty-one P51
1. 8 + 8 = 16 — 2. 8 + 1 = 9 — 3. 1 + 7 = 8 —
4. 8 + 3 = 11 — 5. 5 + 5 = 10 — 6. 8 + 7 = 15 —
7. 8 + 9 = 17 — 8. 6 + 3 = 9 — 9. 6 + 6 = 12 —
10. 2 + 5 = 7 — 11. 7 + 6 = 13 — 12. 5 + 4 = 9 —
Practice the Strategies
Add. Color doubles facts . Color count on facts . Color doubles plus one or doubles minus one facts .
Make a counting on problem. Write the missing numbers.
13. 7 — apples are in a bag. 3 — more apples are put in the bag.How many apples are in the bag now?
10 — apples
COMMON CORE STANDARD—1.OA.6 Add and subtract within 20.
red
red
redyellow
blue
blue
blue
blue
blue
yellow
yellowyellow
Answers will vary, but one addend should be 1, 2, or 3.
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P52 fifty-two
Lesson Check (1.OA.6)
1. Whichstrategywouldyouusetofind2+8?Explainhowyoudecided.
———————
———————
2. Whatisthesumof9+9?Writethenumber.
18 —
Spiral Review (1.OA.1, 1.OA.3)
3. Whatisthesumof5+2or2+5?Whyisthesumthesame?
———————
———————
4. Howmanyflowersarethere?
Writethenumber.
3flowers and 3moreflowers 6—flowers
Count on. Possible explanation: When I add 2 to 8,
I can count on, 9, 10.
7; Possible explanation: The addends are the same.
Only the order is different.
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Chapter 3 fifty-three P53
Draw red and yellow to solve.Write the addition sentence.
5. Linda has 10 toy cars. She gets 6 more cars. How many toy cars does she have now?
10 — + 6 — = 16 — toy cars
1. 10 + 7
_
17
2.
10 + 5
_
15
3. 10 + 9
_
19
4.
10 + 4
_
14
Add 10 and More
Draw red to show 10. Draw
yellow to show the other addend. Write the sum.
COMMON CORE STANDARD—1.OA.6 Add and subtract within 20.
R R R R R
R R R R R
Y Y
Y Y
Y Y Y
R R R R R
R R R
Y Y Y Y
Y Y Y Y
Y
R R
R R R R R
R R R R R
Y Y Y Y Y
R R R R R
R R R R R
Y Y
Y
Y Y Y
R R R R R
R R R R R
Y Y Y Y
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P54 fifty-four
Lesson Check (1.OA.6)
1. Drawmore toshowtheadditionfact.Thensolve.
10 1 3
_
2. Whatnumbersentencedoesthismodelshow?Writethenumbersentence.
10 —+ 8 —= 18 —
Spiral Review (1.OA.1)
3. Showthreedifferentwaystomake10.Writethenumbersentences.
10 = — + — 10 = — + — 10 = — + —
4. Thereare3largeturtlesand1smallturtle.Howmanyturtlesarethere?Writethenumbersentenceandhowmany.
4 —turtles 3 — + 1 — = 4 —
13
Possible answers: 5 ∙ 5, 4 ∙ 6, 3 ∙ 7, 2 ∙ 8, 1 ∙ 9, 0 ∙ 10, 10 ∙ 0, 9 ∙ 1, 8 ∙ 2, 7 ∙ 3, 6 ∙ 4. Check children’s answers.
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Chapter 3 fifty-five P55
Solve.
4. 10 + 6 has the same sum as 7 + 9 — .
Make a 10 to Add
Use red and yellow and a ten frame. Show both addends. Draw to make a ten. Then write the new fact. Add.
1. 5 + 7
_
2. 9 + 5
_
3. 8 + 3
_
B
10
+ B
4
_
B
14
B
10
+ B
2
_
B
12
B
10
+ B
1
_
B
11
COMMON CORE STANDARD—1.OA.6 Add and subtract within 20.
Problem SolvingProblem Solving
R R R R R
R R Y Y Y
Y Y
R R R R R
R
Y
R R Y Y
R R R R R
R R R R Y
Y Y Y Y
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P56 fifty-six
Lesson Check (1.OA.6)
1. Whatsumdoesthismodelshow?Writethenumber.
2. Whatadditionsentencedoesthismodelshow?Writethenumbersentence.
Spiral Review (1.OA.1, 1.OA.6)
3. Whatisthesumof4+6?Writethesum.
10 —
4. Thereare2bigflowersand4smallflowers.Howmanyflowersarethere?
Writethenumbersentenceandhowmany.
6—flowers 2—+ 4—= 6—
B
10
+ B
5
_
B
15
B
10
+ B
4
_
B
14
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Chapter 3 fifty-seven P57
Use the clues to solve. Draw lines to match.
3. Ann and Gia are eating grapes.Ann eats 10 green grapes and 6 red grapes. Gia eats the same number of grapes as Ann. Match each person to her grapes.
Use Make a 10 to Add
Write to show how you make a ten. Then add.
1. What is 9 + 7?
9 — 1 1 — 1 6 —
10 — 1 6 — 5 16 —
So, 9 + 7 = 16 — .
2. What is 5 + 8?
8 — 1 2 — 1 3 —
10 — 1 3 — 5 13 —
So, 5 + 8 = 13 — .
Ann
Gia
7 green grapes and 9 red grapes
10 green grapes and 6 red grapes
COMMON CORE STANDARD—1.OA.6 Add and subtract within 20.
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P58 fifty-eight
Lesson Check (1.OA.6)
1. Write the number sentence.Make a ten to find 8 + 4.
Write the number sentence.
8 — + 2 — + 2 — =
Spiral Review (1.OA.6, 1.OA.8)
2. What is the difference? Complete the subtraction sentence.
3. What is the difference?
Write the difference. 8 2 2
_
12
5− 5]
0
6
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Algebra • Add 3 Numbers
Look at the . Complete the addition sentences showing two ways to find the sum.
HANDS ONLesson 3.10
Chapter 3 fifty-nine P59
3. Choose three numbers from 1 to 6.Write the numbers in an addition sentence. Show two ways to find the sum.
1. 5 + 4 + 2 = 11 —
5 — + 6 — = 11 — 9 — + 2 — = 11 —
2. 2 + 2 + 6 = 10 —
4 — + 6 — = 10 — 2 — + 8 — = 10 —
COMMON CORE STANDARD—1.OA.3 Understand and apply properties of operations and the relationship between addition and subtraction.
Answers may vary. One possible answer: 3, 4, 6; 3 + 4 + 6 = 13;7 + 6 = 13; 3 + 10 = 13.
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P60 sixty
Lesson Check (1.OA.3)
1. What is the sum of 3 + 4 + 2?
Write the sum.
9 —
2. What is the sum of 5 + 1 + 4?
Write the sum.
10 —
Spiral Review (1.OA.1, 1.OA.6)
3. What is the sum of 3 and 7?
4. 4 cows are in the barn. 2 more cows join them. How many cows are in the barn now?
Complete the model and the number sentence.
6 — cows 4 + 2 = 6 —
3 + 7
_
6
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Chapter 3 sixty-one P61
Draw a picture. Write the number sentence.
9. Don has 4 black dogs.Tim has 3 small dogs. Sue has 3 big dogs. How many dogs do they have?
4 — + 3 — + 3 — = 10 — dogs
Algebra • Add 3 Numbers
Choose a strategy. Circle two addends to add first. Write the sum.
7 3
+ 3
_
13
2 2
+ 6
_
10
6 6
+ 3
_
15
3 3
+ 5
_
11
1 2
+ 9
_
12
6 4
+ 3
_
13
1. 2. 3. 4.
5. 6. 7. 8.
4 4
+ 8
_
16
2 0
+ 8
_
10
COMMON CORE STANDARD—1.OA.3 Understand and apply properties of operations and the relationship between addition and subtraction.
Circled addends may vary.
Possible drawings shown. Order of addends may vary.
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P62 sixty-two
1. Whatisthesumof4+4+2?
10—
2. Circletwoaddendstoaddfirst.Findthesum.Explainyourstrategy.
7 3
+ 2
_
Spiral Review (1.OA.6)
3. Writeadoublesplusonefactforthesumof7.
3—+ 4—= 7—
4. Whatadditionsentencedoesthismodelshow?Writethenumbersentence.
8—+ 3—= 11—
Lesson Check (1.OA.3)
________
________
Strategies and circled addends will
vary.
12
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Lesson 3.12
Chapter 3 sixty-three P63
Problem Solving • Use Addition Strategies
Draw a picture to solve.
1. Franco has 5 crayons. He gets 8 more crayons. Then he gets 2 more crayons. How many crayons does he have now?
15 — crayons
2. Jackson has 6 blocks. He gets 5 more blocks. Then he gets 3 more blocks. How many blocks does he have now?
14 — blocks
3. Avni has 7 gifts. Then he gets 2 more gifts. Then he gets 3 more gifts. How many gifts does Avni have now?
12 — gifts
4. Meeka has 4 rings. She gets 2 more rings. Then she gets 1 more ring. How many rings does she have now?
7 — rings
5 — 8 — 2 — 15 —
6 — 5 — 3 — 14 —
7 — 2 — 3 — 12 —
4 — 2 — 1 — 7 —
COMMON CORE STANDARD—1.OA.2 Represent and solve problems involving addition and subtraction.
+ + =
+ + =
+
+
+
+
=
=
Drawings may vary.
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P64 sixty-four
Lesson Check (1.OA.2)
1. Lila has 3 gray stones. She has 4 black stones. She also has 7 white stones. How many stones does she have? Write the number sentence.
14 — stones 3 — 4 — 7 — 14 —
2. Patrick has 3 red stickers, 6 pink stickers, and 8 green stickers. How many stickers does Patrick have? Write the number sentence.
17 — stickers 3 — 6 — 8 — 17 —
Spiral Review (1.OA.1, 1.OA.3)
3. What is the sum of 2 + 4 or 4 + 2?
Write the number.
6 —
4. There are 6 black pens. There are 3 blue pens. How many pens are there?Write the number.
9 — pens 6 — 3 — 9 —
+
+
+
+
=
=
+ =