# Lesson 12 Compare Addition and Subtraction Story Problems

Let’s figure out what’s the same and what’s different about these story problems.

## Warm-up Choral Count: Count to 40

Let’s count to 40.

## Activity 1 Ducks in the Pond

There were 5 ducks in the pond.

4 more ducks came to the pond to swim.

How many ducks are in the pond now?

## Activity 2 Ducks Swim Ashore

There were 9 ducks swimming in the pond.

Then 4 of the ducks waddled onto the grass.

How many ducks are swimming in the pond now?

## Activity 3 Centers: Choice Time

Choose a center.

Bingo

Math Fingers

Subtraction Towers

5-frames

Math Stories

Counting Collections

## Practice Problem

## Problem 1

There are 7 crows in the tree.

Then 3 more crows fly into the tree.

How many crows are in the tree altogether?

Show your thinking using drawings, numbers, words, or objects.