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Grade 7 Chapter 1

Principles of Algebra

absolute value The distance of a number from zero on a number line.
additive inverse The opposite of a number.
algebraic expression An expression that contains at least one variable.
algebraic inequality An inequality that contains at least one variable.
coefficient The number that is multiplied by the variable in an algebraic expression.
constant A value that does not change.
equation A mathematical sentence that shows the two expressions are equivalent.
evaluate To find the value of a numerical or algebraic expression.
inequality A mathematical sentence that shows the relationship between quantities that are not equivalent.
integer The set of whole numbers and their opposites.
inverse operation Operations that undo each other: addition and subtraction, or multiplication and division.
opposite Two numbers that are an equal distance from zero on a number line; also called additive inverse.
solution set The set of values that make a statement true.
substitute To replace a variable with a number or another expression in an algebraic expression.
variable A symbol used to represent a quantity that can change.
Created by: bookannelid