decimal

A dot that indicates "less than one." When reading a number with a decimal, read the decimal as "and."

denominator

Expression in the bottom location of a fraction below the fraction bar.

diameter

The distance from one edge of the circle to the opposite end through the center.

dividend

The quantity that a number is divided into. The dividend is in the numerator of a fraction.

divisor

The quantity by which a number is divided. The divisor is in the denominator of a fraction.

fraction

A number expressed as a/b.

greatest common factor

The highest number that can evenly divide into two numbers.

improper fraction

A fraction in which the numerator is larger than the denominator. An example of an improper fraction is 20/4.

invert

To reverse, or flip the order. When dividing fractions, you invert the denominator, or divisor, of the division problem.

lowest common denominator

The smallest possible denominator that can be shared by two fractions.

lowest terms

The lowest number that a numerator and denominator becomes when it is reduced by its greatest common factor.

mixed number

A number that is a whole number and a fraction. An example of a mixed number is 4 3/5.

numerator

Expression in the top location of a fraction, above the fraction bar.

percent

A fraction in which the denominator is 100.

place value

The location on the number grid where a digit appears in a number. Place values are expressed in values of ten.

proportional

A relationship between two values that expresses equality.

remainder

A number that is left over when a number does not divide evenly into another number.

repeating decimal

A number or a pattern of numbers that appears in a decimal and continues to repeat with no end.

rounding

A method used to shorten numbers. Rounding involves either increasing or decreasing a number to the next digit.

whole number

A number that is 1 or greater with no fractions or decimals.
