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
![large tree](../../../../../downloads/f2c25d71--8301520249_d1ae0fc784_k.jpg)
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
![Center. Math Fingers.](../../../../../downloads/fdad71c5--hand-8b.png)
Subtraction Towers
5-frames
Math Stories
![Center. Math Stories.](../../../../../downloads/06d9e3f0--MathStories-(1).png)
Counting Collections
![Center. Counting Collections.](../../../../../downloads/3de1e05f--counting-collections-illustration.png)
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.