Unit 7 - Lesson 15 - Grade 2: Illustrative Mathematics

Last updated over 1 year ago

8 Nsɛmmisa

Hyɛ no nsow a efi ɔkyerɛwfo no hɔ:

Grade 2 Unit 7

Lesson 15: Decompose a Ten and a Hundred to Subtract

CC BY 2021 Illustrative Mathematics®

Akwankyerɛ

Grade 2 Unit 7

Lesson 15: Decompose a Ten and a Hundred to Subtract

CC BY 2021 Illustrative Mathematics®

Lesson: Decompose a Ten and a Hundred to Subtract

Elena’s Thinking

Walk About and Subtract

Find someone with a different number than you.
Find the difference between your numbers.
Show your thinking.
Trade cards and find a new partner.

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Cool Down: Find the Error

Unit 7 - Lesson 15 - Grade 2: Illustrative Mathematics

Last updated over 1 year ago

8 Nsɛmmisa

Hyɛ no nsow a efi ɔkyerɛwfo no hɔ:

Grade 2 Unit 7

Lesson 15: Decompose a Ten and a Hundred to Subtract

CC BY 2021 Illustrative Mathematics®

Akwankyerɛ

Grade 2 Unit 7

Lesson 15: Decompose a Ten and a Hundred to Subtract

CC BY 2021 Illustrative Mathematics®

Lesson: Decompose a Ten and a Hundred to Subtract

Elena’s Thinking

null

Use base-ten blocks or a base-ten diagram to show Elena’s steps.

Finish Elena’s work to find the value of 726 - 558.

What is another way you could use numbers or equations to show subtracting by place to find the value
of 726 - 558?

Walk About and Subtract

Find someone with a different number than you.
Find the difference between your numbers.
Show your thinking.
Trade cards and find a new partner.

null

Partner 1

Find the difference between your numbers.
Show your thinking.

Partner 2

Find the difference between your numbers.
Show your thinking.

Partner 3

Find the difference between your numbers.
Show your thinking.

Cool Down: Find the Error

Noah found the value of 532 - 358. Here is his work.

null

Unit 7 - Lesson 15 - Grade 2: Illustrative Mathematics

Elena’s Thinking

Walk About and Subtract

Unit 7 - Lesson 15 - Grade 2: Illustrative Mathematics

Elena’s Thinking

Use base-ten blocks or a base-ten diagram to show Elena’s steps.

Finish Elena’s work to find the value of 726 - 558.

What is another way you could use numbers or equations to show subtracting by place to find the value
of 726 - 558?

Walk About and Subtract

Partner 1

Find the difference between your numbers.
Show your thinking.

Partner 2

Find the difference between your numbers.
Show your thinking.

Partner 3

Find the difference between your numbers.
Show your thinking.

Explain Noah's error.

Show Noah a way to find the value of 532 - 358.

Use base-ten blocks or a base-ten diagram to show Elena’s steps.

Finish Elena’s work to find the value of 726 - 558.

What is another way you could use numbers or equations to show subtracting by place to find the value
of 726 - 558?

Partner 1

Find the difference between your numbers.
Show your thinking.

Partner 2

Find the difference between your numbers.
Show your thinking.

Partner 3

Find the difference between your numbers.
Show your thinking.

Explain Noah's error.

Show Noah a way to find the value of 532 - 358.

Unit 7 - Lesson 15 - Grade 2: Illustrative Mathematics

Elena’s Thinking

Walk About and Subtract

Unit 7 - Lesson 15 - Grade 2: Illustrative Mathematics

Elena’s Thinking

Use base-ten blocks or a base-ten diagram to show Elena’s steps.

Finish Elena’s work to find the value of 726 - 558.

What is another way you could use numbers or equations to show subtracting by place to find the valueof 726 - 558?

Walk About and Subtract

Partner 1

Find the difference between your numbers.Show your thinking.

Partner 2

Find the difference between your numbers.Show your thinking.

Partner 3

Find the difference between your numbers.Show your thinking.

Explain Noah's error.

Show Noah a way to find the value of 532 - 358.

Use base-ten blocks or a base-ten diagram to show Elena’s steps.

Finish Elena’s work to find the value of 726 - 558.

What is another way you could use numbers or equations to show subtracting by place to find the valueof 726 - 558?

Partner 1

Find the difference between your numbers.Show your thinking.

Partner 2

Find the difference between your numbers.Show your thinking.

Partner 3

Find the difference between your numbers.Show your thinking.

Explain Noah's error.

Show Noah a way to find the value of 532 - 358.

What is another way you could use numbers or equations to show subtracting by place to find the value
of 726 - 558?

Find the difference between your numbers.
Show your thinking.

Find the difference between your numbers.
Show your thinking.

Find the difference between your numbers.
Show your thinking.

What is another way you could use numbers or equations to show subtracting by place to find the value
of 726 - 558?

Find the difference between your numbers.
Show your thinking.

Find the difference between your numbers.
Show your thinking.

Find the difference between your numbers.
Show your thinking.