September 18, 2014

Test tomorrow over Chapter 7.

Don’t forget to study math properties.

Commutative Property of Addition—if the order of terms changes, the sum stays the same. 12 + a = a + 12

Associative Property of Addition—when the grouping of terms changes, the sum stays the same. 5 + (8 + b) = (5 + 8) + b

Identity Property of Addition—The sum of 0 and any number is that number.
0 + c = c

Commutative Property of Multiplication—if the order of factors changes, the product stays the same.
d x 9 = 9 x d

Associative Property of Multiplication—when the grouping of factors changes, the products stays the same.
11 x (3 x e) = (11 x 3) x e

Identity Property of Multiplication—the product of 1 and any number is that number. 1 x f = f

Distributive Property—multiplying a sum by a number is the same as multiplying each term by the number and then adding the products.
5 x (g + 9) = (5 x g) + (5 x 9)