Unit 7 - Lesson 4 - Grade 2: Illustrative Mathematics

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13 questions

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Grade 2 Unit 7
Lesson 4: Add and Subtract Three-digit Numbers in Different Ways
CC BY 2021 Illustrative Mathematics®

Instructions

Grade 2 Unit 7
Lesson 4: Add and Subtract Three-digit Numbers in Different Ways
CC BY 2021 Illustrative Mathematics®

Lesson: Add and Subtract Three-digit Numbers in Different Ways

Number Talk: Count Back by Place (Warm Up)

Find the value of each expression mentally.

Zero Tens and Zero Ones

Mai and Lin were asked to find the value of 500 - 387.

Here is their work.

Add or Subtract with Expanded Form

Andre and Diego showed their thinking with equations to find the value of 427 + 351.

Cool Down: Find the Sum, Find the Difference

Find the value of each expression. Show your thinking.

Unit 7 - Lesson 4 - Grade 2: Illustrative Mathematics

Unit 7 - Lesson 4 - Grade 2: Illustrative Mathematics

Number Talk: Count Back by Place (Warm Up)

Zero Tens and Zero Ones

Add or Subtract with Expanded Form

Number Talk: Count Back by Place (Warm Up)

586 - 100

486 - 20

457 - 200

257 - 30

Zero Tens and Zero Ones

Try Mai’s way to find the value of
600 - 476.

Try Lin’s way to find the value of
400 - 134.

Add or Subtract with Expanded Form

What is the same or different about their work?

Try Andre’s way to find the value of
725 + 243.

Try Diego’s way to find the value of
863 - 432.

Choose your own way to find the value of 163 + 326. Show your thinking.

Choose your own way to find the value of 692 - 571. Show your thinking.

382 + 216

700 - 428

586 - 100

486 - 20

457 - 200

257 - 30

Try Mai’s way to find the value of
600 - 476.

Try Lin’s way to find the value of
400 - 134.

What is the same or different about their work?

Try Andre’s way to find the value of
725 + 243.

Try Diego’s way to find the value of
863 - 432.

Choose your own way to find the value of 163 + 326. Show your thinking.

Choose your own way to find the value of 692 - 571. Show your thinking.

382 + 216

700 - 428

Unit 7 - Lesson 4 - Grade 2: Illustrative Mathematics

Unit 7 - Lesson 4 - Grade 2: Illustrative Mathematics

Number Talk: Count Back by Place (Warm Up)

Zero Tens and Zero Ones

Add or Subtract with Expanded Form

Number Talk: Count Back by Place (Warm Up)

586 - 100

486 - 20

457 - 200

257 - 30

Zero Tens and Zero Ones

Try Mai’s way to find the value of 600 - 476.

Try Lin’s way to find the value of 400 - 134.

Add or Subtract with Expanded Form

What is the same or different about their work?

Try Andre’s way to find the value of 725 + 243.

Try Diego’s way to find the value of863 - 432.

Choose your own way to find the value of 163 + 326. Show your thinking.

Choose your own way to find the value of 692 - 571. Show your thinking.

382 + 216

700 - 428

586 - 100

486 - 20

457 - 200

257 - 30

Try Mai’s way to find the value of 600 - 476.

Try Lin’s way to find the value of 400 - 134.

What is the same or different about their work?

Try Andre’s way to find the value of 725 + 243.

Try Diego’s way to find the value of863 - 432.

Choose your own way to find the value of 163 + 326. Show your thinking.

Choose your own way to find the value of 692 - 571. Show your thinking.

382 + 216

700 - 428

Try Mai’s way to find the value of
600 - 476.

Try Lin’s way to find the value of
400 - 134.

Try Andre’s way to find the value of
725 + 243.

Try Diego’s way to find the value of
863 - 432.

Try Mai’s way to find the value of
600 - 476.

Try Lin’s way to find the value of
400 - 134.

Try Andre’s way to find the value of
725 + 243.

Try Diego’s way to find the value of
863 - 432.