The commutative property of addition and the commutative property of multiplication.
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Associative Property
3 addends mean 3 numbers. Regroup I believe means carry over. So I'm thinking something like 36+29+12=
In the expression 3(4+5)which property allows you to distribute the 3to both the 4and 5
Cummutative Property=> The order of addends [does not] change the sum!
Communitive