OCR GCSE Mathematics key terms

The value halfway between the lower and upper boundaries of a class interval.

The difference between the upper and lower boundaries of a class interval.

The direction in which the hands of a clock move.

A numerical multiplier of a variable, such as $5$ in $5x^2$.

Describes points that lie on the same straight line.

A two-dimensional vector written vertically, with the horizontal component above the vertical component.

A denominator shared by two or more fractions, used when adding or subtracting them.

The fixed amount added to one term of an arithmetic sequence to obtain the next; it may be negative.

A factor shared by two or more numbers.

A multiple shared by two or more numbers.

A drawing instrument with a fixed point and a pencil leg, used to draw circles.

The event containing every possible outcome that is not in a given event.

Rewriting a quadratic expression in the form $a(x-h)^2+k$, which makes its turning point visible.

One of the horizontal or vertical movements that together make up a two-dimensional vector.

A simpler familiar shape into which a composite shape can be divided, such as a rectangle, triangle or trapezium.

A flat shape formed by combining two or more simpler two-dimensional shapes.

A chart with one bar per category, divided into sections that show each group's contribution to the total.

A function formed by applying one function and then applying another to its output.

A whole number greater than 1 that is not prime because it has more than two positive factors.

A three-dimensional object formed from two or more simpler solids.

Repeated percentage decrease, with each decrease calculated from the amount at the start of that period.

Repeated percentage increase, with each increase calculated from the amount at the start of that period.

Two inequalities combined to place both a lower and an upper restriction on a variable.

Interest calculated on the current balance, so earlier interest can itself earn interest in later periods.

A measurement formed by combining two or more units, usually through multiplication or division; examples include kilometres per hour and pounds per kilogram.

The probability of an event when another event is known to have occurred; $P(A\mid B)$ means the probability of $A$ given $B$.

A solid with a circular base and a curved surface tapering to a point.