Cube numbers practice for 11+ maths
21 October 2026
What are cube numbers
Cube numbers are the result of multiplying a whole number by itself twice more. For example, 2 cubed means 2 × 2 × 2.
Why cube numbers matter for 11+
Cube numbers often appear in 11+ maths exams. Children may be asked to recognise, calculate or use cube numbers in different questions.
How to calculate a cube number
To find the cube of a number, multiply the number by itself, and then multiply the result by the original number again. This is sometimes written as 'to the power of 3'.
Worked example: cubing 4
Step 1: Multiply 4 by itself. 4 × 4 = 16.
Step 2: Multiply the result by 4. 16 × 4 = 64.
The correct answer is 64.
Key insight: Cube numbers grow quickly
Learning the first few cube numbers (such as 1, 8, 27, 64, 125) helps children spot patterns and answer questions faster.
Supporting your child at home
Encourage your child to practise cubing numbers from 1 to 10. Use real examples and talk through each step together to build confidence.
