Unit Conversion (Year 4)
Convert between metric units of length, mass and capacity.
The questions below are generated to match the National Curriculum for Year 4 and get harder as you progress from Rookie to Guru.
Worked examples
RookieRead and interpret directly.
How many minutes is 2 hours and 30 minutes?
- 150 minutes
- 230 minutes
- 2 hours 30 mins
- 120 minutes
Answer: 150 minutes. 2 × 60 + 30 = 150 minutes.
ProCompare and infer.
Fill the step: 2,750 g = ___ kg = ___ g.
- 2.75 kg = 2,750 g
- 27.5 kg = 27,500 g
- 0.275 kg = 275 g
- 275 kg = 275,000 g
Answer: 2.75 kg = 2,750 g. g → kg: ÷ 1,000. 2,750 ÷ 1,000 = 2.75 kg.
GuruMulti-step reasoning.
A pupil reads a clock showing 14:50 and writes '4:50 PM'. Find the mistake.
- After 12:00, subtract 12 to get the PM hour. 14 − 12 = 2, so 14:50 = 2:50 PM, not 4:50 PM.
- There is no mistake.
- Should be 14:50 PM.
- Should be 14:50 AM.
Answer: After 12:00, subtract 12 to get the PM hour. 14 − 12 = 2, so 14:50 = 2:50 PM, not 4:50 PM.. 14:50 = 2:50 PM.
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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