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Level 3-4 Shapes - Imperial and Metric
A Formula One race must exceed 305 kilometres. Approximately how far is this in miles?

Level 3-4 Shapes - Imperial and Metric

For KS3 Maths you'll need to understand both imperial and metric units of measurement. Imagine calculating the area of some shapes in metric units like centimetres or metres. Now convert your answers to imperial. How many centimetres make an inch or how many yards in a metre? Hopefully, this quiz will make things simple.

Metric units are all based on powers of ten like 100s or 1,000s. They include metres, kilograms and litres. They're based on decimalsisation because tens are so much easier to work with. The older, and now mostly outdated, imperial system has units such as yards, pounds and pints with seemingly random values. Despite this, the old system is still in use and you will most certainly have come across pounds and ounces, miles or the Fahrenheit temperature scale. It is useful to know some rough metric equivalents of common imperial units. That will make your life so much easier. Here is a list of some approximate equivalent values:

  • 1kg = 2.2lb
  • 1 litre = 1.75 pints
  • 1 gallon = 4.5 litres
  • 5 miles = 8km
  • 1 inch = 2.54cm
  • 1 foot = 30cm
  • 12 inches in a foot
  • 16 ounces in a pound (lb)
  • 14lb in a stone

Now you just need to get some practise. This Maths quiz should help!

Choose the largest drink from the following.
1 gallon of orange juice
1 pint of milk
1 litre of water
2,000 ml of tea
Remember this phrase: 'A litre of water is a pint and three quarters'
Which is the largest weight of the following?
2 kg
7 lbs
1,860 g
17 oz
1 kg is approximately equal to 2.2 lbs. 'lbs' means pounds
John buys 10 kilograms of potatoes. Approximately how much does he have to carry home in ounces?
253 ounces
352 ounces
523 ounces
532 ounces
1 kilogram equals approximately 2.2 pounds and 1 pound equals 16 ounces
A fuel tank holds 45 litres. Approximately how many pints will it hold?
40 pints
80 pints
120 pints
160 pints
A gallon of water weighs approximately 10 pounds
One yard equals three feet. How many inches are approximately equal to one metre?
30 inches
33 inches
36 inches
39 inches
A metre is about 3.25 yards
Which is further: 10 miles or 10 kilometres?
10 kilometres
10 miles
They are the same
None of the above
One mile is approximately equal to 1.6 kilometres
An imperial gallon of petrol contains approximately how many litres?
An American gallon is only equal to 3.78 L!
Adam is 6 feet 4 inches tall, approximately how tall is he in metres and centimetres?
1 m 64 cm
1 m 80 cm
1 m 90 cm
2 m 10 cm
1 foot contains 12 inches. 1 inch equals approximately 2.5 cm
A Formula One race must exceed 305 kilometres. Approximately how far is this in miles?
90 miles
190 miles
290 miles
390 miles
There are approximately 1.6 kilometres in a mile
An ounce weighs approximately how many grams (g)?
2.8 g
8.2 g
28 g
82 g
So, a quarter of an ounce would be 7g
Author:  Frank Evans

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