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 |
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2. The expression 4×5 and 5×4 are equal by the ___________ |
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3. The expression 2+(3+4) and (2+3)+4 are equal by the ______________ |
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4. Multiplication and ___________ are opposite operations |
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5. _____________ and _________ are commutative |
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