# Lesson 5 Find the Difference

Let’s find differences within 10.

## Warm-up Number Talk: Missing Value Within 10

Find the number that makes each equation true.

10-6=

## Activity 1 Different Ways to Find the Difference

Mai, Diego, and Noah find the value of

Diego says, “I can take away.”

What does Diego mean?

Be ready to explain your thinking in a way that others will understand.Mai says, “I can count on.”

What does Mai mean?

Be ready to explain your thinking in a way that others will understand.Noah says, “I can use what I know about

to help me.”

What does Noah mean?

Be ready to explain your thinking in a way that others will understand.

## Activity 2 Subtraction Number Strings

## Problem 1

Find the value of each difference in the subtraction string.

Explain what you notice.

Set 1:

## Problem 2

What do you notice?

Why do you think this happens?

Be ready to explain your thinking in a way that others will understand.

## Problem 3

Find the value of each difference in the subtraction string.

Explain what you notice.

Set 2:

## Problem 4

What do you notice?

Why do you think this happens?

Be ready to explain your thinking in a way that others will understand.

## Activity 3 The Value of the Difference

Find the value of each difference.

## Practice Problem

## Problem 1

Find the value of each expression.

Show your thinking using drawings, numbers, or words.