MEASURES AND TIME

Converting Capacity

Learn the reliable method for converting capacity, then apply it to 11+ exam-style questions.

1 · WHAT YOU NEED TO KNOW

The idea

Metric capacity conversions use 1 litre = 1,000 millilitres.

Picture itConnect the number to its unit and scale
Bowls, fruit, scales and a measuring jug showing ratio and measurement in baking
2 · THE METHOD

Follow these steps

  1. Convert every capacity to the same unit.
  2. Complete the addition, subtraction, sharing or fraction step.
  3. Return to the requested unit.
3 · WORKED EXAMPLES

See the method in action

Example 1

Convert 6 litres to ml.

Conversion bridgelitres × 1,000 = ml6 litres? ml
  1. There are 1,000 ml in 1 litres, so 6 litres = 6,000 ml.
Answer: 6,000 ml
Example 2

A supply contains 6 litres. 3 equal portions of 250 ml are used. How much remains in ml?

6 litres3 × 250 ml
  1. The used amount is 3 × 250 = 750 ml.
  2. Convert the supply to 6,000 ml, then subtract to get 5,250 ml.
Answer: 5,250 ml
4 · ELEVENSPRINT TIP

A useful shortcut

Return to the requested unit.

5 · COMMON MISTAKES

Watch out for these

6 · TRY IT YOURSELF

Three fresh questions

Ready to check the method? You will get three fresh, validated questions.