Unit 3 - Lesson 20 - Grade 5: Illustrative Mathematics

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11 questions
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Grade 5 Unit 3
Lesson 20: How Much in the Group?
CC BY 2021 Illustrative Mathematics
Grade 5 Unit 3
Lesson 20: How Much in the Group?
CC BY 2021 Illustrative Mathematics
Lesson: How Much in the Group?

Estimation Exploration: What Number Goes in the Blank? (Warm Up)

1

What number goes in the blank?


Record an estimate that is:

Different Equations

1

If 1/3 of the class is 9 students, how many students are in the class?

Explain or show your reasoning.

1

Explain how this equation represents the situation.

1

Explain how this equation represents the situation.

1

Explain how this equation represents the situation.

How Big is the Class?

Jada’s class has 24 students in it. That is 1/4 of the total students in the 5th grade.
1

How many students are in the 5th grade? Explain or show your reasoning.

1

Select all the equations that represent this situation.

How Many in One Group?

Solve each problem. Show or explain your reasoning.
1

250 mg of calcium is 1/4 of the daily recommended allowance. What is the daily recommended allowance of calcium? Show or explain your reasoning.

1

A rocket took 60 days to get 1/5 of the way to Mars. How many days did it take the rocket to get to Mars? Show or explain your reasoning.

Cool Down:Drive to School
1

If 1/3 of the drive to Han’s school is 2 miles, how long is the whole drive to school?

Draw a diagram and explain your reasoning.

1

If 1/3 of the drive to Han’s school is 2 miles, how long is the whole drive to school?

Write a division equation that represents this situation.