Any number that can be expressed as the ratio of two integers.

A number without fractions; an integer.

A whole number; a number that is not a fraction.

A fraction whose denominator is a power of ten and whose numerator is expressed by figures placed to the right of a decimal point.

Bringing something to an end.

A decimal fraction in which a figure or group of figures is repeated indefinitely.

A real number that cannot be written as a simple fraction.

The sixteenth letter of the Greek alphabet ( Π, π ), transliterated as 'p.'

A numerical quantity that is not a whole number.

The quantitative relation between two amounts showing the number of times one value contains or is contained within the other.