Unit 3 - Lesson 6 - Grade 3: Illustrative Mathematics - Formative Library | Library

Instructions

Grade 3 Unit 3
Lesson 6: Use Strategies and Algorithms to Add
CC BY 2021 Illustrative Mathematics®

Number Talk: Little More, Little Less (Warm Up)

Find the value of each expression mentally.

1

300 + 156

1

299 + 156

1

303 + 156

1

204 + 376

Just Ones

1

Two methods of recording the addition of 657 + 286 are shown.

How is the newly composed ten and hundred recorded differently in each method?

Try the second method of recording to add these numbers:

1

602 + 179

1

493 + 161

1

How Would You Add?

Use a strategy of your choice to find the value of each sum. Show your reasoning. Organize it so it can be followed by others.

1

199 + 348

1

264 + 359

1

Unit 3 - Lesson 6 - Grade 3: Illustrative Mathematics

Unit 3 - Lesson 6 - Grade 3: Illustrative Mathematics

Number Talk: Little More, Little Less (Warm Up)

300 + 156

299 + 156

303 + 156

204 + 376

Just Ones

Two methods of recording the addition of 657 + 286 are shown.

How is the newly composed ten and hundred recorded differently in each method?

602 + 179

493 + 161

How Would You Add?

199 + 348

264 + 359

Would you use an algorithm or another strategy to find the value of 299 + 179?

Explain your reasoning.

Number Talk: Little More, Little Less (Warm Up)

300 + 156

299 + 156

303 + 156

204 + 376

Just Ones

Two methods of recording the addition of 657 + 286 are shown.

How is the newly composed ten and hundred recorded differently in each method?

602 + 179

493 + 161

438 + 364

329 + 381

How Would You Add?

199 + 348

264 + 359

203 + 75

316 + 198

399 + 499

Would you use an algorithm or another strategy to find the value of 299 + 179?

Explain your reasoning.

438 + 364

329 + 381

203 + 75

316 + 198

399 + 499

Unit 3 - Lesson 6 - Grade 3: Illustrative Mathematics

Unit 3 - Lesson 6 - Grade 3: Illustrative Mathematics

Number Talk: Little More, Little Less (Warm Up)

300 + 156

299 + 156

303 + 156

204 + 376

Just Ones

Two methods of recording the addition of 657 + 286 are shown.How is the newly composed ten and hundred recorded differently in each method?

602 + 179

493 + 161

How Would You Add?

199 + 348

264 + 359

Would you use an algorithm or another strategy to find the value of 299 + 179?Explain your reasoning.

Number Talk: Little More, Little Less (Warm Up)

300 + 156

299 + 156

303 + 156

204 + 376

Just Ones

Two methods of recording the addition of 657 + 286 are shown.How is the newly composed ten and hundred recorded differently in each method?

602 + 179

493 + 161

438 + 364

329 + 381

How Would You Add?

199 + 348

264 + 359

203 + 75

316 + 198

399 + 499

Would you use an algorithm or another strategy to find the value of 299 + 179?Explain your reasoning.

438 + 364

329 + 381

203 + 75

316 + 198

399 + 499

Two methods of recording the addition of 657 + 286 are shown.

How is the newly composed ten and hundred recorded differently in each method?

Would you use an algorithm or another strategy to find the value of 299 + 179?

Explain your reasoning.

Two methods of recording the addition of 657 + 286 are shown.

How is the newly composed ten and hundred recorded differently in each method?

Would you use an algorithm or another strategy to find the value of 299 + 179?

Explain your reasoning.