Mathematics Glossary
670 words. Numbers, shapes, measurement and patterns. These are the words that help you talk about maths clearly and solve problems with confidence.
Full explanations
Angle
MathematicsFull explanation
An angle is the amount of turn between two lines that meet at a point, measured in degrees.
Area
MathematicsFull explanation
Area is the amount of flat surface a shape covers, measured in square units.
Decimal
MathematicsFull explanation
A decimal is a number that uses a decimal point to show parts that are smaller than one.
Denominator
MathematicsFull explanation
The denominator is the bottom number of a fraction. It tells how many equal parts make one whole.
Equivalent fractions
MathematicsFull explanation
Equivalent fractions are different fractions that name the same amount, like 1/2 and 2/4.
Fraction
MathematicsFull explanation
A fraction is a number that names equal parts of a whole. If a bar is cut into 4 equal parts and you take 3 of them, you have 3/4 of the bar.
Multiplication
MathematicsFull explanation
Multiplication is a quick way to add the same number again and again.
Numerator
MathematicsFull explanation
The numerator is the top number of a fraction. It tells how many equal parts are being counted.
Perimeter
MathematicsFull explanation
Perimeter is the distance all the way around the outside of a shape.
Place value
MathematicsFull explanation
Place value means a digit is worth different amounts depending on where it sits in a number. In 253, the 5 is worth 5 tens, which is 50.
Rounding
MathematicsFull explanation
Rounding replaces a number with a nearby number that is easier to use, such as the nearest ten.
Volume
MathematicsFull explanation
Volume is the amount of space a solid shape takes up, measured in cubic units.
Browse by topic
Data Handling and Statistics
72 words
Includes average, average of two, axis, bar graph…
Fractions, Decimals and Percentages
82 words
Includes align, benchmark fraction, collection, common denominator…
Geometry and Spatial Reasoning
99 words
Includes 2D shape, 3D shape, acute, acute angle…
Mathematical Reasoning and Problem-Solving
13 words
Includes because, expense, fixed cost, fluency…
Measurement
123 words
Includes 24-hour clock, a.m., a.m./p.m., afternoon…
Numbers and Place Value
130 words
Includes absolute value, after, ascending, backwards…
Operations and Computation
114 words
Includes add, addend, algorithm, altogether…
Patterns and Algebraic Thinking
38 words
Includes AB pattern, claim, coefficient, colour pattern…