Unit Conversion (Year 3)
Convert between metric units of length, mass and capacity.
The questions below are generated to match the National Curriculum for Year 3 and get harder as you progress from Rookie to Guru.
Worked examples
RookieRead and interpret directly.
Convert 200 cm to m.
- 2 m
- 20 m
- 0.2 m
- 200 m
Answer: 2 m. 200 ÷ 100.
ProCompare and infer.
Bottle holds 2 litres. Sara pours 750 ml. How much left?
- 1,250 ml
- 750 ml
- 2,000 ml
- 1,000 ml
Answer: 1,250 ml. 2,000 − 750.
GuruMulti-step reasoning.
A jug holds 1 litre. Sara fills 4 cups, each 200 ml. Can she fill 5?
- No - 5 needs 1,000 ml = exactly 1 l, OK so YES.
- Yes always
- No - too much
- Cannot tell
Answer: No - 5 needs 1,000 ml = exactly 1 l, OK so YES.. 5 × 200 = 1,000 = jug.
Related skills
Frequently asked questions
- What is unit conversion?
- Convert between metric units of length, mass and capacity.
- How can my child practise unit conversion at home?
- Work through the examples below, then start a free adaptive session. Northstar adjusts the difficulty automatically and tracks mastery over time.
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