OCR GCSE Mathematics key terms

A function in which the variable is an exponent, such as $y=3\times1.1^x$.

An increase produced by repeatedly multiplying a quantity by the same number greater than 1 over equal time periods.

A combination of numbers, variables and operations without an equals sign.

The turning angle between one side of a polygon and the continuation of the adjacent side, taking one angle at each vertex in a consistent direction.

Estimating a value beyond the range covered by the recorded data.

A flat surface of a three-dimensional solid.

An expression multiplied by another expression to make a product, such as $x+2$ in $(x+2)(x-3)$.

A whole number that divides another whole number exactly, with no remainder; also called a divisor.

To rewrite an expression as a product of factors, such as writing $x^2-5x+6$ as $(x-2)(x-3)$.

The numbers being multiplied together in a multiplication.

An experiment in which the outcomes being compared are equally likely.

The sequence $1,1,2,3,5,8,\ldots$, in which each new term is the sum of the previous two.

The velocity at the end of the time interval being considered.

The changes found by subtracting each term of a sequence from the term immediately after it.

A mathematical statement giving a relationship between quantities, usually containing an equals sign.

A number written as one integer divided by another non-zero integer.

An index written as a fraction. Its denominator represents a root and its numerator represents a power.

A fraction whose numerator and denominator have no common factor greater than 1.

A number expressing one part as a share of the complete amount.

The number of times a value or class occurs.

The frequency per unit of class width, calculated by dividing frequency by class width.

A table showing how many observations belong to each category or have each value.

A branching diagram that records counts for groups of outcomes; the counts at each split add to the count before it.

The elevation obtained by looking straight at the solid from its stated front direction.

One complete turn about a point, equal to $360^\circ$.

A rule that assigns an output to each permitted input.

A logical argument in which each conclusion is supported by stated information or an accepted geometrical fact.