Printable · GCSE Foundation · ages 14-16

Converting between standard and compound units worksheet — GCSE Foundation

Fifteen questions on "converting between standard and compound units" — DfE statement R1. Print it, or print three versions so neighbours cannot copy by letter; the key gives the letter for each version.

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Converting between standard and compound units worksheet — GCSE Foundation

Maths · GCSE Foundation · R1 · Converting between standard and compound units · 15 questions

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1.The density of a liquid is 0.92 g/cm³. Work out the density of the liquid in kg/m³.
(a)9.2 kg/m³
(b)92 kg/m³
(c)920 kg/m³
(d)0.00092 kg/m³
2.A watering can holds 4500 cm³ of water. Given that 1 litre = 1000 cm³, work out the capacity of the watering can in litres.
(a)45 litres
(b)0.45 litres
(c)4.5 litres
(d)450 litres
3.A film runs for 2.25 hours. Work out the length of the film in minutes.
(a)135 minutes
(b)150 minutes
(c)225 minutes
(d)145 minutes
4.1 metre = 100 cm. Work out how many square centimetres there are in 1 square metre.
(a)100 cm²
(b)10000 cm²
(c)1000000 cm²
(d)200 cm²
5.A tap fills a tank at a rate of 15 litres per minute. Given that 1 litre = 1000 cm³, work out the rate at which the tank fills in cm³ per second.
(a)15000 cm³/s
(b)2500 cm³/s
(c)900000 cm³/s
(d)250 cm³/s
6.A runner's speed is 8 m/s. Given that there are 3600 seconds in an hour and 1000 metres in a kilometre, work out the runner's speed in km/h.
(a)28.8 km/h
(b)2.88 km/h
(c)28800 km/h
(d)2.22 km/h
7.A cyclist travels d kilometres in t hours. Write down an expression, in terms of d and t, for the cyclist's average speed in km/h.
(a)d + t
(b)d × t
(c)t ÷ d
(d)d ÷ t
8.A cyclist rides at a steady speed of 20 mph. Given that 1 mile ≈ 1.6 km, work out the cyclist's speed in km/h.
(a)21.6 km/h
(b)20 km/h
(c)32 km/h
(d)12.5 km/h
9.Given that 1 mile ≈ 1.6 km, work out a speed of 55 mph in km/h.
(a)33 km/h
(b)56.6 km/h
(c)88 km/h
(d)34.38 km/h
10.A force of 20 N acts on an area of 4 m². Using pressure = force ÷ area, work out the pressure, in pascals.
(a)5
(b)24
(c)80
(d)16
11.Write 3 hours 45 minutes as a decimal number of hours.
(a)3.67
(b)4.15
(c)3.45
(d)3.75
12.A section of a kitchen wall has an area of 45,000 cm². Work out the area of this section in m².
(a)0.45 m²
(b)450.00 m²
(c)4500000.00 m²
(d)4.50 m²
13.A lorry is carrying a load of mass m tonnes. Given that 1 tonne = 1000 kg, write down an expression for the mass of the load in kilograms.
(a)1000m
(b)m − 1000
(c)m/1000
(d)1000 + m
14.A force of 250 N acts on an area of 0.5 m². Using pressure = force ÷ area, work out the pressure, in pascals.
(a)50
(b)125
(c)500
(d)249.5
15.A jug holds 2 litres. Given that 1 litre = 1000 cm³, work out the capacity of the jug in cm³.
(a)20 cm³
(b)2000 cm³
(c)200 cm³
(d)20000 cm³

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