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K-5 Grade 1 Unit 3 Lesson 12

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•K-5 Math 6-8 Math 9-12 Math

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Kindergarten •Grade 1 Grade 2 Grade 3 Grade 4 Grade 5

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Unit 1 Unit 2 •Unit 3 Unit 4 Unit 5 Unit 6 Unit 7 Unit 8

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Lesson 1 Lesson 2 Lesson 3 Lesson 4 Lesson 5 Lesson 6 Lesson 7 Lesson 8 Lesson 9 Lesson 10 Lesson 11 •Lesson 12 Lesson 13 Lesson 14 Lesson 15 Lesson 16 Lesson 17 Lesson 18 Lesson 19 Lesson 20 Lesson 21 Lesson 22 Lesson 23 Lesson 24 Lesson 25 Lesson 26 Lesson 27 Lesson 28

K-5
6-8
9-12

Kindergarten
Grade 1
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Grade 4
Grade 5

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IM K-5 Math
IM 6-8 Math
IM 9-12 Math

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Lesson 12

Warm-up Activity 1 Activity 2 Activity 3

Unit 3, Lesson 12

Subtract from a Teen Number

Grade 1

Warm-up

None

Activity 1

Noah collects game pieces.
He has 19 game pieces arranged like this in his bin.

Two ten frames with connecting cubes. 3 rows, full. Bottom row, 4 cubes.

Noah takes out 8 game pieces to play with.
How many game pieces are left in the bin?
Show your thinking using drawings, numbers, or words.

Activity 2

Find the number that makes each equation true.

Be ready to explain your thinking.

Activity 3

None