Mathematics·Measurement·conceptual
Metric & Imperial Conversion
Understand and use approximate equivalences between metric units and common imperial units (inches, pounds, pints)
Suggested ages 9–10
Learning journey
Your child is mastering advanced measurement skills — calculating area and perimeter of shapes, working with fractions in measurements, converting between different units, and solving real-world problems involving distance, time, and volume.
Evidence of 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)
Assessment prompt
If Metric & Imperial Conversion hears that a baby weighs 7 pounds, can they give a rough idea of that in kilograms — using the approximate conversion they know?
Standards alignment
No external standards are linked to this topic.