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Choose everyday metric units and estimate using familiar benchmarks.
Free examples and worked answers. No account needed.
Practise the method.
Choose everyday metric units and estimate using familiar benchmarks.
Choose everyday metric units and estimate using familiar benchmarks.
Example 1
A bucket holds about 5 full 1−litre cartons of water. Estimate the bucket's capacity in litres.
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Answer: 5
- Each carton holds 1 litre.
- 5 cartons ×1 litre = about 5 litres.
Example 2
A bucket holds about 7 full 1−litre cartons of water. Estimate the bucket's capacity in litres.
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Answer: 7
- Each carton holds 1 litre.
- 7 cartons ×1 litre = about 7 litres.
Example 3
One unopened bag has a mass of 1000g. A parcel feels about as heavy as 5 of these bags. Estimate its mass in grams.
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Answer: 5000
- Use the known bag as a benchmark.
- 5×1000g= about 5000g.
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