Teachers, save “Compose and Decompose Numbers” to assign it to your class.

1. Click the button to begin this activity. 2. For slides 2-7, count the dots. 3. Then use the tool to write a number sentence. 4. For slides 8-11, drag the counters to match each number sentence. 5. Then use the tool to write the total on the line. 6. Press when you are done.