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algebraic expression

An expression consisting of one or more numbers and variables along with one or more arithmetic operations

distributive property

Multiplying a sum by a number is the same as multiplying each term by the number and then adding (or subtracting ) the products.

factor

A number that divides evenly into another number. 3 is a factor of 15 (look at the chart!)

common factor

a number that is a factor of two or more numbers

greatest common factor

The greatest factor that two or more numbers share.

Coefficient

the decimal part

Like Terms

expressions that contain the same variables to the same power

Combining like terms

If an expression has several terms, you might find it helpful to rearrange the terms so that like terms are together.

Equation

A mathematical sentence that contains an equals sign

associative property of addition

When the grouping of terms changes, the sum stays the same.

associative property of multiplication

When the grouping of factors changes, the products stays the same.

commutative property of addition

If the order of the terms changes, the sum stays the same.

commutative property of multiplication

If the order of factors changes, the product stays the same.