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Unit 3 - Lesson 13 - Grade 3: Illustrative Mathematics

Last updated 9 months ago
10 questions
Note from the author:
Grade 3 Unit 3
Lesson 13: Multiples of 100
CC BY 2021 Illustrative Mathematics®
Grade 3 Unit 3
Lesson 13: Multiples of 100
CC BY 2021 Illustrative Mathematics®
Lesson: Multiples of 100

Estimation Exploration: Marching Band (Warm Up)

1

How many people are in the marching band? Record an estimate that is:

About 100? Close to 100?

Here are the numbers of people in different parts of a school at noon during a school day.
  • playground: 94
  • cafeteria: 163
  • art room: 36
  • library: 13
  • classrooms: 216
  • gymnasium: 109
  • music room: 52
1

Where in the school would you say that there are about 100 people?

Record the numbers in the table. Be prepared to explain your reasoning.

1

Now decide if the number of people in each part of the school is close to 0, close to 100, or close to 200.

If you don’t think a number belongs in any column, set it aside. Be prepared to explain your reasoning.

Close to Multiples of 100

Your teacher will assign a set of numbers to you.

1

Work with your group to decide on which number line each number should go. Then, locate and label each number on the number line.

1

Locate and label 364 on the correct number line.

1

Name two multiples of 100 that are closest to 364.

1

Of the two multiples of 100 you named, which one is 364 closer to?

1

Write the numbers assigned to you earlier. For each number, name the nearest multiple of 100.

Cool Down: Locate, Label, and Name
1

Locate and label 185 on the number line on which it belongs.

1

Name the closest multiple of 100 to 185.