Mastering Maths: Key Terms Glossary Part 3

Created by Team 11+ Connect

Parallel	Parallel lines are straight lines that always stay the same distance from each other and never meet.
Partitioning	Partitioning means separating numbers into tens, units, hundred, etc.
Percentage	A percentage expresses a number or ratio expressed as a fraction of 100.
Perimeter	The distance around a 2D shape.
Perpendicular	Perpendicular lines are at right angles to each other.
Pictogram	A chart that uses pictures to represent data.
Pie chart	Circular charts divided into sections or slices.
Place value	The value of each digit in a number.
Polygon	A 2D shape with straight, closed sides. Examples include triangles, squares, pentagons, etc.
Prime number	A number greater than 1 that cannot be divided evenly by any other number other than by itself or by 1.
Prism	A 3D shape with flat sides and two identical ends.
Probability	The study of how likely something is to happen.
Product	The answer when two numbers are multiplied together.
Proportion	The portion or part in relation to the whole.
Pyramid	A 3D shape with a polygon base and triangular sides,
Quadrilateral	2D shapes with four sides e.g. square, rectangle, kite, etc.
Radius	The distance from the centre of a circle to the edge.
Range	The difference between the lowest and highest value in a data set.
Ratio	A ratio compares values.
Reflex angle	An angle between 180-360 degrees.
Right angle`	An angle that measures 90 degrees.
Right-angled triangle	A 2D shape with three sides and a 90 degree angle.
Roman numeral	The numbers used in ancient Rome e.g. I, V, X
Rounding numbers	To adjust a number up or down.
Scale factor	The way to increase or decrease the size of a 2D shape.
Scalene triangle	A 2D three-sided shape with three unequal sides,
Square number	The result of multiplying a number by itself.
Symmetry	When a shape is the same on both sides.
Tally chart	A chart that uses marks to represent data.
Turns	The way a shape moves clockwise or anti-clockwise.
Two-step problem	A word problem that requires two mathematical operations.
Venn diagram	A diagram that shows the relationship between a group of different things and how they overlap.
Vertex/vertices	In shapes, the vertices are the points where two or more edges meet.
Vertical line	A line that runs up and down the page.
Volume	The amount of space a 3D shape takes up.
X-axis	The horizontal line on a graph.
Y-axis	The vertical line on a graph.