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Unit 4 - Lesson 20 - Grade 3: Illustrative Mathematics

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11 Questions
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Grade 3 Unit 4
Lesson 20: Strategies for Dividing
CC BY 2021 Illustrative Mathematics®
Grade 3 Unit 4
Lesson 20: Strategies for Dividing
CC BY 2021 Illustrative Mathematics®
Lesson: Strategies for Dividing

Number Talk: Multiplication and Division (Warm Up)

Find the value of each expression mentally.
1.

2.

3.

4.

Ways to Divide

Lin, Priya, and Tyler found the value of


Their work is shown. Make sense of each student’s work.

5.

How are the three students’ work alike?

6.

How are they different?

How Would You Divide?

  • Find the value of each quotient.
  • Explain or show your reasoning.
  • Organize it so it can be followed by others.
7.

8.

9.

10.

If you have time:

Eighty-four students on a field trip are put into groups. Each group has 14 students. How many groups are there?

Compare, Divide within 100 (Optional)

Play Compare with 2 players.
  1. Shuffle the cards and split the deck between the players.
  2. Each player turns over a card.
  3. Compare the values. The player with the greater value keeps both cards.
  4. Play until you run out of cards. The player with the most cards at the end of the game wins.
Cool Down: One More Division
11.

Find the value of


Explain or show your reasoning.