|
common
factor |
An integer that will divide exactly (meaning there is no remainder)
into two or more integers. Commonly used in simplifying fractions. |
|
composite
number |
Any number that has more than itself and one as factors, i.e.,
is not a prime number. |
|
denominator |
Any number b, except for zero, in a fraction written in
the form a/b. |
|
equivalent
fractions |
Fractions which have the same value. |
|
factor
tree |
A visual representation used to show the prime factors of a number. |
|
fraction |
Representation of the quotient of two numbers, a and b,
written in the form a/b where b
¹ 0 (b is not equal to zero). |
|
fraction
bar |
The line in a fraction that separates the numerator and denominator. |
|
greatest
common factor (GCF) |
The largest integer factor that two or more numbers have in common.
The GCF is most often used to simplify fractions. |
|
integer |
Any whole number or zero. |
|
least
common denominator (LCD) |
The least common multiple of the denominators of a group of fractions. |
|
multiple |
The result of multiplying a number by a whole number. For example,
40 is a multiple of 5, given 5 x 8 = 40. |
|
multiplier |
An integer multiplied with both the numerator and denominator
of a fraction. |
|
numerator |
Any integer a, in a fraction written in the form a/b. |
|
percent |
Symbol is "%", which means, "per one hundred." |
|
prime
factor |
Prime numbers that are factors of an integer. |
|
prime
factorization |
An expansion of a product of primes, used to find common factors
and to help simplify fractions. |
|
prime
number |
A number that has only two factors, 1 and itself. |
|
proportion |
An equation that states equality between two ratios. |
|
ratio |
The comparison of two numbers by division. |
|
reciprocal |
The multiplicative inverse of a given quatity. It is formed by
dividing 1 by the given quantity. To find the reciprocal of a
fraction, simply "flip it over." |
|
rounding
down |
Done when restricting a decimal to a limited number of places.
When rounding down, we leave the decimal in the place where we
are rounding to as it is given, and discard all digits to its
right. This is done when the next place value is four or less. |
|
rounding
up |
Done when restricting a decimal to a limited number of places.
When rounding up, we increase the decimal in the place where
we are rounding to by a value of 1, and drop off the digits to
the right. This is done when the next place value is greater
than or equal to five. |
|
simplified
fraction |
A fraction which has had all common factors of the numerator
and denominator canceled. |
|
inequality
symbols: |
|
|
|
greater than or equal to |
|
|
less than or equal to |
|
|
greater than |
|
|
less than |
