This worksheet teaches students to choose sensible metric units, change between combined measures like 1 m 35 cm and 135 cm, and compare measurements of length, mass and capacity. The worksheet is split into warm-up questions, standard questions and then extension questions to test you.
The concepts it covers:
- Length: 1 km = 1000 m, 1 m = 100 cm, 1 cm = 10 mm (so 1 m = 1000 mm).
- Mass: 1 kg = 1000 g. Capacity: 1 L = 1000 mL.
- Use big units for big things (km between towns) and small units for small things (mm for the thickness of a coin).
- A combination of units, like 1 m 35 cm, is more accurate than "about 1 m". The smaller the unit, the more accurate the measure.
What your child will practise:
- Choosing the best unit to measure an object.
- Ordering metric units from largest to smallest.
- Changing a combined measure to the smaller unit (1 m 35 cm = 135 cm).
- Changing a measure in the smaller unit to a combined measure (405 cm = 4 m 5 cm).
- Comparing and ordering measures by changing them to the same unit.
Every section opens with a worked example, and the download includes a full answer key with step-by-step solutions and teaching notes on the mistakes students most commonly make.
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