MEASURES AND TIME

Converting Mass

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

1 · WHAT YOU NEED TO KNOW

The idea

Metric mass conversions use 1 kilogram = 1,000 grams.

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 mass to the same unit.
  2. Calculate with the converted values.
  3. Express the result in kilograms or grams as requested.
3 · WORKED EXAMPLES

See the method in action

Example 1

A parcel contains the book and gift shown. Find their total mass in grams.

BOOK0.625 kg3,250 g
  1. 0.63 kg = 625 g.
  2. Then 625 + 3,250 = 3,875 g.
Answer: 3,875 g
Example 2

A quantity measures 3 kg. After 65 g is removed, how much remains in g?

3 kg65 g removed
  1. Convert first: 3 kg = 3,000 g.
  2. Then subtract 65, leaving 2,935 g.
Answer: 2,935 g
4 · ELEVENSPRINT TIP

A useful shortcut

Express the result in kilograms or grams as requested.

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.