GRE Math Vocab
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Integer
 An integer is a whole number.
 1, 0, and 1 are integers.
 1/4 is not an integer.

Even vs. Odd
 An even number is any integer that can be divided evenly by 2.
 An odd number is any integer that can't.

even + even = even or odd?
even + even = even

odd + odd = even or odd?
odd + odd = even

even + odd = even or odd?
even + odd = odd

even x even = even or odd?
even x even = even

odd x odd = even or odd?
odd x odd = odd

even x odd = even or odd?
even x odd = even

Factors
 A factor of another number can divide that number without leaving a remainder.
 1,2,3,4, and 6 are all factors of 12.

Multiples
 A multiple of a number is that number multiplied by an integer.
 20, 10, and 700 are all multiples of 10.

Quotient
 The result of division.
 For 12 / 3, the quotient is 4.

Divisor
 The number to divide by.
 For 12 / 3, the divisor is 3.

The order of operations is described by what acronym?
 PEMDAS, or Please Excuse My Dear Aunt Sally.
 Parenthesis, Exponents, Multiplication and Division (left to right), Addition and Subtraction (left to right)