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# 2012-7thMathPTVocab1

### South Habersham Middle School 7th Grade Math Powertime Vocabulary Unit 1

WordDefinition
Additive Inverse A number that when added to another number gives a sum of zero. Example 5 and -5.
Multiplicative Inverse Pair of numbers that 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...}
Long Division Standard procedure suitable for dividing simple or complex multi-digit numbers. It breaks down a division problem into a series of easier steps.
Natural Numbers The set of numbers {1, 2, 3, 4,...}. Also called counting numbers.
Negative Numbers The set of numbers less than zero.
Opposite Numbers Two different numbers that have the same absolute value. Example: 4 and -4.
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.
Created by: hbogue