math

Fractions

A number representing a part of a whole, written as a numerator over a denominator.

A fraction consists of a numerator (top number, the parts you have) and a denominator (bottom number, total equal parts).

Adding/Subtracting: Find a common denominator first. 1/3 + 1/4 = 4/12 + 3/12 = 7/12
Multiplying: Multiply numerators and denominators. 2/3 × 3/5 = 6/15 = 2/5
Dividing: Flip the second fraction and multiply. 3/4 ÷ 2/5 = 3/4 × 5/2 = 15/8

Related Calculators

A number expressed as a fraction of 100, used to describe proportions and rates of change.

A measure of the spread or dispersion of a data set from its mean (average).

Three measures of central tendency used to describe the center of a data set.

A fundamental relation in geometry: the square of the hypotenuse equals the sum of squares of the other two sides.

Area measures the surface inside a shape (in square units); perimeter measures the distance around it.

The inverse of exponentiation — the logarithm of a number tells you the exponent needed to produce that number from a given base.