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8th grade properties
associativ, commutative, inverse, identity, distributive
Question | Answer |
---|---|
commutative property | change order: a+b=b+a 4+6=6+4 |
associative property | alwats same: think moving cheeks. a+(b+c)=(a+)+C works for multiplcation too. |
inverse prpoerty | opposit! (a)+(-a)=0 1/a*a/1=1 8+(-8)=0 |
distributve property | distribute a number through a parenthesis. whach for negatives! the sign always goes with the number behind it!a(b+c)=ab+ac 3(a+6)=3a+18 |
identity property | no one can change you! a+0=a a*1=a 4+0=4 31*1=31 |