WJEC MATHEMATICS
INTERMEDIATE
MEASURES
METRIC AND IMPERIAL UNITS
(CONVERSIONS)
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Contents
Conversions to learn!
Useful amounts to remember
Which units to use
Metric to Imperial Conversions
Converting Units
Credits
WJEC Question bank
http://www.wjec.co.uk/question-bank/question-search.html
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Conversions to learn!
Learning these conversions will come in handy for many topics at
GCSE.
Useful amounts to remember
Item
Can of Coke
Bag of Crisps
Bag of Sugar
Height of a man
Height of a car
Length of a football pitch
Approximate Amount
300ml
30g
1kg
1.8m (Using 2m for this is fine)
1.5m
100m
Which units to use
Item
Milk and Petrol
Medicine
Potatoes
Flour
Distance from Cardiff to York
Length of a field
Length of a paper clip
Unit used to measure
Litres
Millilitres
Kilograms
Milligrams or Kilograms
Kilometres
Metres
Centimetres or Millimetres
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Metric to Imperial Units
Make sure you learn these!
Imperial
1 inch
1 mile
1.75 pints
2.2 pounds
Metric
2.5cm
1.6km
1 litre
1 kg
Converting Units
Once the first number is a 1, add a multiplication line from the 1 to
the other number and multiply by the other number
To convert in the opposite direction draw a second line, replace the
multiply with a divide
So now we can see to convert from inches to cm you need to
multiply by 2.5 and to convert from cm to inches you need to divide
by 2.5
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Example 1
Convert 17 miles to kilometres
So,
Convert 158.4km into miles
Exam Questions G40
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