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Laabri

Unit 7 - Lesson 3 - Grade 2: Illustrative Mathematics

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Last updated over 1 year ago
15 Nsɛmmisa
Hyɛ no nsow a efi ɔkyerɛwfo no hɔ:

Grade 2 Unit 7

Lesson 3: Count on or Count Back to Subtract

CC BY 2021 Illustrative Mathematics®

Grade 2 Unit 7

Lesson 3: Count on or Count Back to Subtract

CC BY 2021 Illustrative Mathematics®

Lesson: Count on or Count Back to Subtract

Number Talk: Tens and Hundreds (Warm Up)

Jump Back, Back, Back

Who Spilled Paint?

1
Cool Down : Mystery Number
1

Find the value of each expression mentally.

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1.

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2.

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3.

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4.

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5.

What do you notice?

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6.

What do you wonder?

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7.

Try Andre’s way to find the value of

189 - 73.

Show your thinking. Use a number line if it helps.

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8.

Find the value of 647 - 46 in your own way.

Show your thinking. Use a number line if it helps.

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9.

Oh no! Diego spilled paint on his paper and now he can’t see all the numbers.

Find the number that makes each equation true.

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10.
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11.
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12.
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15.

Find the number that makes the equation true.

Show your thinking.

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13.
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14.