Grade 3 Unit 3
Lesson 1: Represent Numbers in Different Ways
CC BY 2021 Illustrative Mathematics®
Grade 3 Unit 3
Lesson 1: Represent Numbers in Different Ways
CC BY 2021 Illustrative Mathematics®
Directions:
Your teacher will give you a set of cards that show numbers in different forms.
Match the cards that represent the same number.
Record your matches here.
Explain your reasoning.
In Box 1, write a three-digit number.
(Pause for your teacher's instructions.)
In Box 2, show a way that the number could be decomposed.
(Pause for your teacher's instructions.)
In Box 3, show a way that the number could be decomposed that’s different from Box 2.
(Pause for teacher instructions.)
In Box 4, show a way that the number could be decomposed that’s different from Boxes 2 and 3.
Look at the different ways your number was decomposed on your recording sheet. What connections do you see between them?
Look at all of the recording sheets for your group. What patterns do you notice in the ways the numbers are decomposed?
Select all the ways you could represent two hundred fifty-seven.