Measurement
5 minQuiz at the end
Metric Units
The metric system uses multiples of 10, making conversions straightforward.
Length
| Unit | Equivalent |
|---|---|
| 1 km | 1,000 m |
| 1 m | 100 cm |
| 1 cm | 10 mm |
Mass
| Unit | Equivalent |
|---|---|
| 1 tonne | 1,000 kg |
| 1 kg | 1,000 g |
| 1 g | 1,000 mg |
Capacity
| Unit | Equivalent |
|---|---|
| 1 litre | 1,000 ml |
| 1 cl | 10 ml |
Converting Units
Multiply or divide by the appropriate power of 10:
- 3.5 km β metres: Γ 1000 = 3,500 m
- 2,500 ml β litres: Γ· 1000 = 2.5 litres
Comparing Units
Convert everything to the same unit before comparing.
1.5 m = 150 cm = 1500 mm = 0.0015 km β all equal!
Imperial Units
| Imperial | Metric equivalent |
|---|---|
| 1 inch | β 2.54 cm |
| 1 foot | = 12 inches |
| 1 mile | β 1.6 km |
| 1 pound | β 454 g |
| 1 pint | β 568 ml |