Measurement

How many centimetres are in 1 metre?

• A10
• B50
• C100✓
• D1000

Answer: 1 metre = 100 centimetres.

A room is 5 metres long and 4 metres wide. What is the perimeter?

• A9
• B18✓
• C20
• D25

Answer: Perimeter = 2 × (5 + 4) = 2 × 9 = 18 metres.

How many millilitres are in 1 litre?

• A10
• B100
• C1000✓
• D10000

Answer: 1 litre = 1000 millilitres.

A recipe uses 250 ml of milk. How many litres is that?

• A0.25 litres✓
• B2.5 litres
• C25 litres
• D0.5 litres

Answer: 250 ml = 0.25 litres (because 250 ÷ 1000 = 0.25).

How many minutes are in 2 hours?

• A60
• B90
• C120✓
• D180

Answer: 2 hours = 2 × 60 = 120 minutes.

A piece of material is 1.5 metres. How many centimetres is that?

• A15
• B50
• C100
• D150✓

Answer: 1.5 metres = 1.5 × 100 = 150 centimetres.

A jug holds 2 litres of water. How many 250 ml glasses can it fill?

• A4
• B6
• C8✓
• D10

Answer: 2 litres = 2000 ml. 2000 ÷ 250 = 8 glasses.

How many grams are in 1 kilogram?

• A100
• B500
• C1000✓
• D10000

Answer: 1 kilogram = 1000 grams.

A package weighs 2.5 kg. What is that in grams?

• A250
• B500
• C2500✓
• D25000

Answer: 2.5 kg = 2.5 × 1000 = 2500 grams.

How many seconds are in 5 minutes?

• A60
• B150
• C300✓
• D600

Answer: 5 minutes = 5 × 60 = 300 seconds.

A swimming pool is 25 metres long and 12 metres wide. What is the area?

• A37
• B74
• C300✓
• D600

Answer: Area = length × width = 25 × 12 = 300 square metres.

A room is 4 metres long and 3 metres wide. What is the area?

• A7
• B12✓
• C14
• D24

Answer: Area = 4 × 3 = 12 square metres.

How many hours are in 1 day?

• A12
• B24✓
• C30
• D60

Answer: 1 day = 24 hours.

A garden is 10 metres long and 8 metres wide. What is the perimeter?

• A18
• B36✓
• C80
• D100

Answer: Perimeter = 2 × (10 + 8) = 2 × 18 = 36 metres.

A recipe requires 750 ml of stock. How many litres is that?

• A0.95 litres
• B7.5 litres
• C1.75 litres
• D0.75 litres✓

Answer: 750 ml = 0.75 litres.

A journey takes 3 hours and 45 minutes. How many minutes is that?

• A180
• B205
• C225✓
• D245

Answer: 3 hours = 180 minutes. 180 + 45 = 225 minutes.

How many metres are in 2.5 kilometres?

• A25
• B250
• C2500✓
• D25000

Answer: 2.5 kilometres = 2.5 × 1000 = 2500 metres.

A wall is 6 metres long and needs tiles that are 30 cm each. How many tiles?

• A20✓
• B30
• C40
• D50

Answer: 6 metres = 600 cm. 600 ÷ 30 = 20 tiles.

A bottle contains 500 ml. How many bottles make 2 litres?

• A2
• B3
• C4✓
• D5

Answer: 2 litres = 2000 ml. 2000 ÷ 500 = 4 bottles.

A lorry weighs 3 tonnes. What is that in kilograms?

• A300
• B3000✓
• C30000
• D300000

Answer: 1 tonne = 1000 kg, so 3 tonnes = 3000 kg.

How many days are in 3 weeks?

• A21✓
• B24
• C30
• D35

Answer: 3 weeks = 3 × 7 = 21 days.

A rectangular garden is 15 metres long and 9 metres wide. What is the area?

• A24
• B48
• C135✓
• D270

Answer: Area = 15 × 9 = 135 square metres.

An event lasts from 14:00 to 17:30. How long does it last?

• A2.5 hours
• B3 hours
• C4 hours
• D3.5 hours✓

Answer: 17:30 - 14:00 = 3 hours and 30 minutes = 3.5 hours.

How many millimetres are in 5 centimetres?

• A5
• B50✓
• C500
• D5000

Answer: 5 cm = 5 × 10 = 50 mm.

A box is 2 metres × 1.5 metres × 0.5 metres. What is the volume?

• A1.5 cubic metres✓
• B2 cubic metres
• C3 cubic metres
• D4 cubic metres

Answer: Volume = 2 × 1.5 × 0.5 = 1.5 cubic metres.

A map has a scale of 1 cm to 5 km. Two towns are 7 cm apart on the map. How far apart are they in real life?

• A35 km✓
• B12 km
• C1.4 km
• D25 km

Answer: Every centimetre on the map stands for 5 km, so 7 cm represents 7 × 5 = 35 km.

On a walking map, 1 cm represents 2 km. A footpath is 9 km long. How long is that footpath on the map?

• A4.5 cm✓
• B18 cm
• C7 cm
• D11 cm

Answer: Every centimetre stands for 2 km, so divide the real distance by 2: 9 ÷ 2 = 4.5 cm.

A room is drawn on a plan to a scale of 1:50. The room measures 8 cm long on the plan. How long is the real room?

• A0.16 m
• B6.25 m
• C4 m✓
• D40 m

Answer: The real length is 50 times the plan length: 8 cm × 50 = 400 cm, which is 4 m.

A concrete mix uses 1 part cement to 5 parts ballast. A builder needs 30 litres of mixed concrete altogether. How much cement does he need?

• A6 litres
• B5 litres✓
• C25 litres
• D15 litres

Answer: The parts add up to 6, so the cement is 1/6 of the mix: 1/6 of 30 litres = 5 litres.

A drink is made with 1 part cordial to 4 parts water. How much cordial is there in a 1,000 ml jug of the drink?

• A250 ml
• B800 ml
• C100 ml
• D200 ml✓

Answer: The parts add up to 5, so the cordial is 1/5 of the jug: 1/5 of 1,000 ml = 200 ml.

A tap fills a 6 litre bucket in 90 seconds. At the same rate, how long does it take to fill a 10 litre bucket?

• A54 seconds
• B94 seconds
• C540 seconds
• D150 seconds✓

Answer: The tap takes 90 ÷ 6 = 15 seconds per litre, so 10 litres take 10 × 15 = 150 seconds.

A storage box is a cuboid 8 cm long, 5 cm wide and 3 cm high. What is its volume?

• A40 cm³
• B16 cm³
• C120 cm³✓
• D160 cm³

Answer: Volume = length × width × height = 8 × 5 × 3 = 120 cm³.

A walking route is 3.4 km long. How many metres is this?

• A3,400 m✓
• B340 m
• C34,000 m
• D3,040 m

Answer: There are 1,000 metres in a kilometre, so multiply by 1,000: 3.4 × 1,000 = 3,400 m.

A television screen is described as 32 inches. Using 1 inch = 2.5 cm, how many centimetres is that?

• A34.5 cm
• B64 cm
• C12.8 cm
• D80 cm✓

Answer: Multiply the inches by the conversion factor: 32 × 2.5 = 80 cm. Dividing instead gives 12.8, which is the common error.

A map has a scale of 1 cm to 5 km. Two villages are 7.5 cm apart on the map. How far apart are they in real life?

• A37.5 km✓
• B12.5 km
• C1.5 km
• D35 km

Answer: Each centimetre on the map stands for 5 km, so multiply: 7.5 × 5 = 37.5 km.

A film starts at 19:45 and lasts 2 hours 25 minutes. At what time does it finish?

• A21:10
• B22:20
• C22:10✓
• D22:00

Answer: Add the 2 hours first: 19:45 becomes 21:45. Then add 25 minutes: 15 minutes takes you to 22:00 and the other 10 minutes to 22:10.

A bottle holds 2.5 litres of juice. How many full 150 ml glasses can be poured from it?

• A15
• B17
• C166
• D16✓

Answer: Change litres to millilitres: 2.5 litres = 2,500 ml. 2,500 ÷ 150 = 16.67, so there are 16 full glasses with some juice left over. A 17th glass would not be full.

Three parcels weigh 1.2 kg, 850 g and 475 g. What is their total weight in kilograms?

• A2.425 kg
• B3.525 kg
• C2.525 kg✓
• D1.535 kg

Answer: Change the grams to kilograms: 850 g = 0.85 kg and 475 g = 0.475 kg. Then add: 1.2 + 0.85 + 0.475 = 2.525 kg.

A train leaves at 08:52 and arrives at 10:17. How long does the journey take?

• A1 hour 35 minutes
• B1 hour 15 minutes
• C2 hours 25 minutes
• D1 hour 25 minutes✓

Answer: From 08:52 to 09:00 is 8 minutes. From 09:00 to 10:17 is 1 hour 17 minutes. Together that is 1 hour 25 minutes.

A road sign in France gives a distance in kilometres. Using 5 miles = 8 km, how many kilometres is 40 miles?

• A53 km
• B320 km
• C25 km
• D64 km✓

Answer: 40 miles is 8 lots of 5 miles, because 40 ÷ 5 = 8. Each lot of 5 miles is 8 km, so 8 × 8 = 64 km.