Objectives

• Simplify sums or differences of single-variable expressions.
• Simplify products or quotients of single-variable expressions.
• Simplify variable expressions involving multiple operations.
• Write and simplify variable expressions describing real-world situations.

Vocabulary

Expression

a number sentence without an equal sign that combines numbers, variables and operations.

Simplify

to make smaller by combining like terms

Sum

the answer in an addition problem.

Difference

the answer in a subtraction problem.

Product

the answer in a multiplication problem.

Quotient

the answer in a division problem.

Commutative Property of Multiplication

states that the product is not affected by the order in which you multiply factors.

Associative Property of Multiplication

states that the product is not affected by the groupings of the numbers when multiplying.