Unit 7 - Lesson 15 - Grade 2: Illustrative Mathematics

Last updated 11 months ago

8 questions

Note from the author:

Grade 2 Unit 7
Lesson 15: Decompose a Ten and a Hundred to Subtract
CC BY 2021 Illustrative Mathematics®

Instructions

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

Cool Down: Find the Error

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Unit 7 - Lesson 15 - Grade 2: Illustrative Mathematics

Last updated 11 months ago

8 questions

Note from the author:

Grade 2 Unit 7
Lesson 15: Decompose a Ten and a Hundred to Subtract
CC BY 2021 Illustrative Mathematics®

Instructions

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

Question 1

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

Question 2

Finish Elena’s work 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.

Partner 1

Question 4

Find the difference between your numbers.

Show your thinking.

Partner 2

Question 5

Find the difference between your numbers.

Show your thinking.

Partner 3

Question 6

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.

Question 7

Explain Noah's error.

Question 8

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

Elena’s Thinking

Question 1

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

Question 2

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

Question 3

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.

Partner 1

Question 4

Find the difference between your numbers.

Show your thinking.

Partner 2

Question 5

Find the difference between your numbers.

Show your thinking.

Partner 3

Question 6

Find the difference between your numbers.

Show your thinking.

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

Question 7

Explain Noah's error.

Question 8

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

Question 3

Unit 7 - Lesson 15 - Grade 2: Illustrative Mathematics

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.

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.

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.

What is another way you could use numbers or equations to show subtracting by place to find the valueof 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.

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