1. 82+(47)=  2. 89+95=  3. 73+61= 
4. 29+(44)=  5. 31+63=  6. 82+(26)= 
7. 34+25=  8. 24+68=  9. 74+(51)= 
1. 83=  2. 22=  3. 0= 
4. 3002=  5. +33=  6. 74= 
1. ________ is the _________ of addition 

2. The expression 4×5 and 5×4 are equal by the ___________ 

3. The expression 2+(3+4) and (2+3)+4 are equal by the ______________ 

4. Multiplication and ___________ are opposite operations 

5. _____________ and _________ are commutative 
