N1/L1.4
Working with metric and decimal units
Being able to divide by 10, 100 and 1,000 is useful when you want to convert between units.
Here are some rules and examples, starting with pounds and pence.
Divide by 100 to change pence into pounds.
Example:
225 p = 225 ÷ 100 = £2.25
Divide by 1,000 to change grams into kilograms.
Example:
1,500 g = 1,500 ÷ 1,000 = 1.500 kg = 1.5 kg
Divide by 1,000 to change millilitres into litres.
Example:
750 ml = 750 ÷ 1,000 = 0.750 l = 0.75 l
Divide by 1,000 to change metres into kilometres.
Example:
750 m = 750 ÷ 1,000 = 0.750 km = 0.75 km
Divide by 100 to change centimetres into metres.
Example:
902 cm = 902 ÷ 100 = 9.02 m
Divide by 10 to change millimetres into centimetres.
Example:
50 mm = 50 ÷ 10 = 5 cm
£ 1 = 100 p
1 kg = 1,000 g
1 litre = 1,000 ml
1 km = 1,000 m
1 m = 100 cm
1 cm = 10 mm
© BBC 2011