Lesson 4 Add Your Way
Let’s add numbers within 1,000.
Warm-up Number Talk: Hundreds, Tens, and Ones
Find the value of each expression mentally.
Activity 1 Strategies to Add
Find the value of each sum in any way that makes sense to you. Explain or show your reasoning.
Activity 2 Two Ways to Add
Andre found the value of
Clare found the value of
With your partner, discuss:
What’s different about Clare and Andre’s work?
What’s the same?
Practice Problem
Problem 1
Find the value of each sum in any way that makes sense to you. Explain or show your reasoning.