# Lesson 17 Make 10 to Add

Let’s look for patterns and think about making 10 as we add.

## Warm-up How Many Do You See: Double 10-frames

How many do you see?

How do you see them?

## Activity 1 The 9 Plus Game

Put out 9 counters.

Pick a number card and add that many counters.

Write an equation to represent the counters.

Can you write more than one?

Equations:

Round 1:

Round 2:

Round 3:

Round 4:

Round 5:

## Activity 2 Clare’s Birds

Clare draws some birds.

She draws 3 birds in a nest and 9 birds flying.

How many birds did she draw?

Show your thinking using drawings, numbers, or words.Equation:

Clare draws birds that like warm weather.

She draws 6 toucans and 8 parrots.

How many birds did she draw?

Show your thinking using drawings, numbers, or words.Equation:

Clare draws birds that like cold weather.

She draws 7 penguins and 5 owls.

How many birds did she draw?

Show your thinking using drawings, numbers, or words.Equation:

## Practice Problem

## Problem 1

Find the value of each sum.

Show your thinking using drawings, numbers, or words.