G1 U11 L3 TE

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Applied MP

MPs * Embedded MP

Conceptual Lesson Grade 1 · Unit 11 · Lesson 3

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MC: 1.NBT.4 Student Journal Pages

185-190

Today I will add tens to tens and ones to ones and compose a ten when needed.

Vocabulary

Teacher Resources Considerations:

15

This is an additional strategy that can be used with double digit addition.

+8 Decompose 15 the first +8 addend into tens and ones.

Steps: 10 + 5 8

Add tens. Add ones.

10 + 13

Compose a ten.

10 + 10 + 3

Add.

20 + 3

Find the sum.

23

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1. Decompose the first addend into tens and ones. 2. Add tens. Add ones. 3. Compose a ten when necessary. 4. Add. 5. Find the sum.

Application of MPs: MP1:

How can you prove your answers?

MP2: How do you know your answers make sense? MP4: Is there an easier way to find the answer?

Grade 1 Unit 11 Lesson 3 C TE

8

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Answer Key: I/M

SGP

FCU

HW

1. See I/M 1

1. See SGP 1

1. See FCU 1

1. A

2. See I/M 2

2. See SGP 2

2. See FCU 2

2. A

3. A

4. B

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Grade 1 Unit 11 Lesson 3 C TE

/ *MP1: Make sense of the problem and persevere in solving it! *MP8: Find a strategy to help solve the problem. Directions: Solve to find the sum.

1.

15

+8 

State the objective: Today I will add tens to tens and ones to ones and compose a ten when needed.

Copyright © Swun Math



Decompose the first addend into tens and ones.



Add tens. Add ones.

10 + 13



Compose a ten.

10 + 10 + 3



Add.

20 + 3



Find the sum.

23

15 +8

10 + 5 8

Grade 1 Unit 11 Lesson 3 C TE

/ Directions: Solve to find the sum.

2.

27 +7 

Restate the objective: Today I will add tens to tens and ones to ones and compose a ten when needed.

Copyright © Swun Math



Decompose the first addend into tens and ones.



Add tens. Add ones.

20 + 14



Compose a ten.

20 + 10 + 4



Add.

30 + 4



Find the sum.

34

27 + 7

20 + 7 7

Grade 1 Unit 11 Lesson 3 C TE

/ Directions: Solve to find the sum.

1.

62 +9 

Restate the objective: Today I will add tens to tens and ones to ones and compose a ten when needed.

Copyright © Swun Math



Decompose the first addend into tens and ones.



Add tens. Add ones.

60 + 11



Compose a ten.

60 + 10 + 1



Add.

70 + 1



Find the sum.

71

62 + 9

60 + 2 9

Grade 1 Unit 11 Lesson 3 C TE

/ Directions: Solve to find the sum.

2.

53 +7 

Restate the objective: Today I will add tens to tens and ones to ones and compose a ten when needed.

Copyright © Swun Math



Decompose the first addend into tens and ones.



Add tens. Add ones.

50 + 10



Compose a ten and add.

50 + 10



Find the sum.

60

53 + 7

50 + 3 7

Grade 1 Unit 11 Lesson 3 C TE

Directions: Solve to find the sum.

1.

87 +9



Decompose the first addend into tens and ones.



Add tens. Add ones.

80 + 16



Compose a ten.

80 + 10 + 6



Add.

90 + 6



Find the sum.

96

87 + 9

80 + 7 9

2.

49 +4



Decompose the first addend into tens and ones.



Add tens. Add ones.

40 + 13



Compose a ten.

40 + 10 + 3



Add.

50 + 3



Find the sum.

53

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49 + 4

40 + 9 4

Grade 1 Unit 11 Lesson 3 C TE

*MP3: Do you agree/disagree with what said? *MP6: How do you know your answers are correct/reasonable?

Recap today’s lesson with one or more of the following MP questions: MP1: How did you prove your answers? MP2: How did you know your answers made sense? MP4: Was there an easier way to find the answer?

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Grade 1 Unit 11 Lesson 3 C TE

Name: ____________________________ Date: ______________________________ Directions: Solve.

1. Look at the screwdriver in the box. Circle the screwdriver that is shorter than the one in the box.

2. Look at the car in the box. Circle the car that is longer than the car in the box.

A

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B

Grade 1 Unit 11 Lesson 3 C TE

Directions: Solve.

3. Look at the rectangle in the box. Circle the rectangle that is shorter than the rectangle in the box.

A

B

4. Look at the arrow in the box. Circle the arrow that is longer than the arrow in the box.

A

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B

Grade 1 Unit 11 Lesson 3 C TE