# Lesson 15 Addition and Subtraction Expressions within 5

Let’s add and subtract within 5.

## Warm-up Which One Doesn’t Belong: Expressions and Equations

Which one doesn’t belong?

## Activity 1 Four Corners: Totals and Differences

Find the value of the expression on your card. Go to the corner that is labeled with the value of the expression.

## Activity 2 Compare Expressions

You and your partner will both flip over a card. Look at both expressions. If your expression shows the number that is more, say ‘Me!’ and then explain to your partner how you know. If both expressions show the same number, say ‘Same!’

## Activity 3 Centers: Choice Time

Choose a center.

5-frames

Roll and Add

Bingo

Geoblocks

Find the Value of Expressions