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SHMS 7th Grade Math Powertime Vocab 1

Additive Inverse The sum of a number and its additive inverse is zero. Example 5 and -5
Multiplicative Inverse Numbers are multiplicative inverses of each other if they multiply to equal the identity, 1. Example 2/3 and 3/2
Absolute Value The distance between a number and zero on the number line.
Integers The set of whole numbers and their opposites {...-3, -2, -1, 0, 1, 2, 3...}
Natural Numbers The set of numbers {1, 2, 3, 4,...}. These numbers can also be called counting numbers.
Negative Numbers The set of numbers less than zero.
Opposite Numbers Two different numbers that have the same absolute value. Example -5 and 5
Positive Numbers The set of numbers greater than zero.
Rational Numbers The set of numbers that can be written in the form a/b where a and b are integers and b is not equal to 0.
Repeating Decimal A decimal number in which a digit or group of digits repeats without end. Example .3333…
Terminating Decimal A decimal that contains a finite number of digits.
Zero Pair Pair of numbers whose sum is zero. Example 3 + -3 = 0.
Variable A symbol, usually a letter, which is used to represent one or more numbers.
Numerical expression An expression consisting of numbers and operations.
Created by: hbogue