LET’S TRY ONE
What is 15 − 7?
8
Subtract 5 to reach 10, then 2 more to reach 8.
Learning steps & teaching tips
Use subtraction to find a difference within twenty.
- Break apart the number being subtracted or count back through ten.
- Work through the example. Explain how its evidence supports the answer.
- Try a new question; use the explanation to check your thinking.
Try it together
Write or draw your own example with different numbers. Solve it, then ask a partner to check the method as well as the answer.
Break apart the number being subtracted or count back through ten.