Metric & Imperial Conversion
Understand and use approximate equivalences between metric units and common imperial units (inches, pounds, pints)
Teaching approaches
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If your child hears that a baby weighs 7 pounds, can they give a rough idea of that in kilograms — using the approximate conversion they know?
Understand and use approximate equivalences between metric units and common imperial units (inches, pounds, pints)
Learning resources
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Check understanding
- State that 1 inch ≈ 2.5 cm and use this to estimate length in inches
- Know that 1 kg ≈ 2.2 pounds and estimate a person's weight in pounds
- Convert approximately between litres and pints (1 litre ≈ 1.75 pints)
“If your child hears that a baby weighs 7 pounds, can they give a rough idea of that in kilograms — using the approximate conversion they know?”
Curriculum record
- Type
- Conceptual
- Subject
- Mathematics
- Domain
- Measurement
- Age range
- Ages 9–10