O. Subtraction Strategies
Do these problems in your head. Write only the answers.
- 14 − 7 = __________
- 12 − 6 = __________
- 14 − 6 = __________
- 13 − 6 = __________
- 12 − 5 = __________
- 10 − 5 = __________
- 12 − 7 = __________
- 14 − 8 = __________
- 13 − 7 = __________
- Explain your strategy for Question F.