# Lesson 17 Make and Break Apart 10

Let’s look for groups that make 10.

## Warm-up Estimation Exploration: 5 and 5 makes 10

How many dots are there?

Record an estimate that is:

too low

about right

too high

How many dots are there?

Record an estimate that is:

too low

about right

too high

## Activity 1 10 Beads

We are going to make a tool that will help us work with the number 10.

## Activity 2 Make and Break Apart 10

## Problem 1

Use your beads to show each equation. When your partner shows you their beads, tell them the equation to make 10 and draw a picture to show what the beads look like.

## Problem 2

Fill in each equation to match the pictures of beads. You can use your bead tool if it’s helpful.

## Activity 3 Centers: Choice Time

Choose a center.

Shake and Spill

Number Race

Grab and Count

What’s Behind My Back?

Pattern Blocks