Converting Between Metric Units

1 km = 1000 m

1 m = 100 cm

1 m = 1000 mm

1 cm = 10 mm

Metre Stick

mm’s are used to

measure small things

km’s are used to measure large things like distance

1g = 1000 mg

1kg = 1000 g

1 Tonne = 1000kg

mg’s are used to

measure really light things like

tablets

g’s are used to measure light things,

like ingredients

Kg’s are used to

measure quite heavy

things

Tonne’s are used to

measure really heavy things like elephants

330 ml70 cl

1 Litre = 1000 ml

1 Litre = 100 cl

1 cl = 10 ml

1 Kilolitre = 1000 l

1/2 kl

Rol

a-C

ola2l

2000 ml

200 cl 33 cl 700 ml

500 l50,000 cl500,000 ml

George goes into his local off-licence and notices that there is a promotion on his favourite beer.

For £10 he can get:

• 8 x ½ l cans

or

• 1 x 450 cl keg

or

• 12 x 330 ml bottles

Which option gives George the best value for money?