S. More Subtraction Strategies
Do these problems in your head. Write only the answers.
- − 7 = 7
- 17 − = 8
- 18 − = 10
- − 5 = 7
- 7 − = 3
- 15 − = 8
- − 7 = 6
- 18 − = 9
- 14 − = 6
- − 6 = 7
- Explain your strategy for Question G.
Do these problems in your head. Write only the answers.