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Mathematics (math) is the study of numbers, quantities, shapes, and space
using mathematical processes, rules, and symbols. There are many branches of
mathematics and a large vocabulary associated with this subject.
Here are some math words and
terms you will likely come across but may not know their precise meanings. Any
word or term shown in bold is defined in the following
alphabetical list of math words and terms.
Algorithm A step-by-step mathematical procedure used to find an
answer.
Coefficient A number that multiplies a variable. For
example, 9 is the coefficient in 9x.
Denominator The bottom number in a fraction. The denominator
represents the number of parts into which the whole is divided. For example, 6
is the denominator in the fraction .
Equation A mathematical statement used to show that two
expressions are equal. It contains an equals sign. For example, 16 - 9 = 7 (the
expression 16 - 9 and the expression 7 are equal).
Greatest Common Factor (greatest common divisor) The largest number
that will divide two or more other numbers equally. For example, the greatest
common factor of 32 and 48 is 16.
Improper Fraction (mixed fractions) A fraction that has a larger numerator than denominator.
For example, is an improper fraction.
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Inverse Operations Opposite or reverse operations. Addition and subtraction
are inverse operations, as are multiplication and division.
Negative Number A number that is less than zero. A minus sign is used to
show that a number is negative. For example, -12 is a negative number.
Numerator The top number in a fraction. The numerator represents
the number of parts of the whole. For example, 5 is the numerator in the
fraction .
Ordinal Number A number that shows place or position, as in 2nd place.
Positive Number A number that is greater than zero. While a minus sign is
used to signify a negative
number, the absence of a minus sign signifies a positive number.
Prime Number A number that can be divided evenly only by itself and 1.
For example, 7 is a prime number.
Square Number A number that results from multiplying another number by
itself. For example, 49 is the square of 7 (7 x 7 = 49).
Square Root of a Number A number that is multiplied by itself to produce a square number. For
example, 7 is the square root of 49. It is designated by the symbol √.
Variable A quantity that can change or vary, taking on different
values. It is typically represented by a letter of the alphabet. For example x
is the variable in 9x (x can be any number that is being multiplied by 9).
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