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Unit 4 - Lesson 5 - Grade 3: Illustrative Mathematics

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Grade 3 Unit 4

Lesson 5: Write Division Expressions

CC BY 2021 Illustrative Mathematics®

Grade 3 Unit 4

Lesson 5: Write Division Expressions

CC BY 2021 Illustrative Mathematics®

Lesson: Write Division Expressions

Number Talk: What’s the Same? (Warm Up)

Card Sort: All about Bugs

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Solve a Buggy Problem

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Cool Down: Ant Legs

Find the value of each expression mentally.

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Pitanje 1
1.

225 - 100

1
Pitanje 2
2.

227 - 102

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Pitanje 3
3.

230 - 105

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Pitanje 4
4.

220 - 95

Pitanje 5
5.

Your teacher will give you a set of cards that show situations. Sort the cards into 2 categories of your choosing.

Pitanje 6
6.

Be prepared to explain the meaning of your categories.

Pitanje 7
7.

Write a division expression to represent the situation.

Mole crickets have special legs for digging. Ten special legs belong to 5 mole crickets. How many special legs does each mole cricket have?

Pitanje 8
8.

Explain your reasoning.

Pitanje 9
9.

Write a division expression to represent the situation.

A beetle has a pair of antennae for sensing heat, touch, smell, and more. If there are 8 antennae, how many beetles are there?

Pitanje 10
10.

Explain your reasoning.

Pitanje 11
11.

Write a division expression to represent the situation.

Fourteen antennae belong to a group of bees. If each bee has 2 antennae, how many bees are there?

Pitanje 12
12.

Explain your reasoning.

Pitanje 13
13.

Write a division expression to represent the situation.

There are 12 wings. If each dragonfly has 4 wings, how many dragonflies are there?

Pitanje 14
14.

Explain your reasoning.

Pitanje 15
15.

Write a division expression to represent the situation.

Thirty legs belong to 5 ants. If all the ants have the same number of legs, how many legs does each ant have?

Pitanje 16
16.

Explain your reasoning.

Pitanje 17
17.

Write a division expression to represent the situation.

There are 50 spots on 5 butterflies. If each butterfly has the same number of spots, how many spots does each butterfly have?

Pitanje 18
18.

Explain your reasoning.

Pitanje 19
19.

Your teacher will assign a problem to your group.

Create a visual display that shows your thinking and your solution to the problem.

Twenty-four legs belong to 4 ants. All ants have the same number of legs.

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Pitanje 20
20.

Write a division expression to represent this situation.

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Pitanje 21
21.

How many legs does each ant have? Explain or show your reasoning.