Across
- 2. a(b+c)=ab+ac
- 7. a+b=b+a
- 8. changing the grouping will not change the answer
- 9. a=b then b=a
Down
- 1. 0 and a number is the number
- 3. if a=b then a can be substituted for b
- 4. a=a
- 5. when you add 2 opposites the answer is 0
- 6. if a=b and b=c,then a=c