A Balancing Act Section 1

a math rule that states that changing the order of factors does not change their product.

to find a solution to an equation.

relationship of two numbers, expressions or terms that have the same value, uses an equal sign

a math phrase made of a combination of numbers, variables and/or operations.

a math rule that states changing the grouping of addends does not change their sum.

terms in an expression or equation that include the same variable.

a diagram using bars of equal length to represent equal expressions or quantities.

A value that does not vary.

a math rule that states that changing the grouping of factors does not change their product.

Equal in value; different representations of the same thing

a mathematical sentence stating that two expressions are equal.

To substitute numerical value for a variable in an expression.

Expressions that simplify to an equal value for all values

a letter or symbol used to represent a number in an expression or an equation.

a number set of numbers that produces a true statement when substituted for a variable