Pre-Algebra Chapter 1 Suggestions

expressions DO NOT have equal signs; equations do

multiplying a number and a variable: 3y; 7.2n; 9x=72

quotients can be written as fractions, ex. quotient of a number and four: n/4; quotient of fifty-six and eight: 56/8

Commutative Property: The order of the numbers does not change the sum or product. *Think: COMMUTE means to move or change location. ex. 4 x 7= 7 x 4; (23 + 15) x 7 = 7 x (23 + 15)

Associative Property: The groupings of numbers does not change the sum or product. *Think: ASSOCIATE means join together, connect, or combine. ex. (3 x 4) x 5 = 3 x (4 x 5)