Volume of cuboids 11 plus
21 October 2026
Understanding volume of cuboids for 11 plus
Knowing how to calculate the volume of cuboids is a key skill for the 11 plus maths exam. Children are expected to work confidently with 3D shapes and apply simple formulas under timed conditions.
Why volume matters
Volume questions test spatial reasoning and the ability to follow multi-step calculations. They also build on earlier work with area and multiplication.
Key insight: Many children confuse area and volume, or forget to use all three dimensions. Remind your child that volume always uses three measurements: length, width and height.
Worked example
Let's find the volume of a cuboid with length 5 cm, width 4 cm and height 3 cm.
First, multiply the length by the width: 5 cm × 4 cm = 20 cm².
Next, multiply this area by the height: 20 cm² × 3 cm = 60 cm³.
The correct answer is 60 cm³.
Tips for parents
Encourage your child to write out each step and label units clearly. Practise with different sets of numbers, and ask your child to explain their reasoning out loud.
Summary
Regular practice with volume of cuboids 11 plus questions helps children avoid common mistakes and builds confidence for exam day.
