11-plus Maths | Measures - converting from metric to imperial

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Maths Quiz - Measures (Difficult) (Questions)

Measurements link maths with everyday life. In 11 Plus Maths, pupils explore units, conversions, and formulas that help them solve practical problems with precision and confidence.

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Fascinating Fact:

One metre per second equals 3.6 kilometres per hour, so if a car travels at 27.8 metres per second, it is moving at exactly 100 kilometres per hour.

In 11 Plus Maths, learners study how to measure, calculate, and convert between different systems. These skills help them tackle questions on distance, speed, and real-world problem-solving.

Key Terms

Conversion: The process of changing one unit of measurement to another, such as metres to kilometres.
Speed: How fast something is moving, calculated using distance divided by time.
Accuracy: How close a measured or calculated value is to the true result.

Parents can find helpful examples of practice materials in our guide to 11 Plus sample questions.

Frequently Asked Questions (Click to see answers)

How do you convert metres per second to kilometres per hour?

To convert metres per second to kilometres per hour, multiply by 3.6. For example, 10 m/s equals 36 km/h.

Why is accuracy important in measurement?

Accuracy ensures that results are reliable and reflect the true value, which is vital in science, construction, and everyday problem-solving.

What are common measurement units in 11 Plus Maths?

Students use units such as metres, kilometres, litres, grams, and seconds, and learn to convert between them with ease.

Try These Related Quizzes

The weight of a new born baby is between 6 to 9 pounds (lb) where 1 lb = 454 g. If Susan's baby weighed 7 lb, what was its weight in kilograms?

[ ]	3.2 kg
[ ]	2.3 kg
[ ]	15.4 kg
[ ]	1.54 kg

The road sign near the bridge says: Maximum height 2.5 m. If 1 ft (foot) = 30 cm, which of the following vehicle heights is the lowest height that would not be able to pass under the bridge?

[ ]	9 ft
[ ]	8.5 ft
[ ]	7.5 ft
[ ]	8 ft

The volume of a balloon is 640 cm³. If air is escaping at 80 cm³ each minute, what will the volume of the balloon be after 5 minutes?

[ ]	400 cm³
[ ]	200 cm³
[ ]	240 cm³
[ ]	440 cm³

Which of the following is the heaviest: 1 tonne; 1,000 kg; 1,000,000 g (one million)?

[ ]	They are all the same
[ ]	1,000,000 g
[ ]	1,000 kg
[ ]	1 tonne

A rectangular container is 40 cm deep, 40 cm wide and 50 cm long. If water from a tap is pouring in at 1,000 cm³ every minute, how long will it take before the tank is half full?

[ ]	44 min
[ ]	24 min
[ ]	14 min
[ ]	40 min

A van can carry 150 parcels: 50 parcels weigh 120,500 g, 35 parcels weigh 35.5 kg and the remaining 65 weigh 58 kg. What is the total weight of the parcels being carried by the van?

[ ]	241 kg
[ ]	214 kg
[ ]	114 kg
[ ]	141 kg

People used to weigh themselves in stones (st) and pounds (lb). There are 14 lb in 1 stone and 1 kg = 2.2 lb. If Henry weighs 13 st 10 lb, how much does he weigh in kilograms?

[ ]	422 kg
[ ]	78 kg
[ ]	87 kg
[ ]	242 kg

If 1.61 km = 1 mile, how many kilometres would you have to travel in order to have travelled 245 miles?

[ ]	125 km
[ ]	152 km
[ ]	394 km
[ ]	349 km

If 1.61 km = 1 mile, how many miles would you have to travel in order to have travelled 254 kilometres?

[ ]	152 miles
[ ]	125 miles
[ ]	185 miles
[ ]	158 miles

10.

1 oz (ounces) = 28.34 g. What is 6 oz in kilograms?

[ ]	0.170 kg
[ ]	0.017 kg
[ ]	1.7 kg
[ ]	0.0017 kg

Maths Quiz - Measures (Difficult) (Answers)

The weight of a new born baby is between 6 to 9 pounds (lb) where 1 lb = 454 g. If Susan's baby weighed 7 lb, what was its weight in kilograms?

[x]	3.2 kg
[ ]	2.3 kg
[ ]	15.4 kg
[ ]	1.54 kg

If 1 lb = 454 g, then 7 lb = 7 × 454 = 3,178 g. 1 kg = 1,000 g ? 3,178 g = 3,178 ÷ 1,000 = 3.178 kg. You have to divide by 1,000 because you want to find out how many 'lots' of 1,000 there are in 3,178: each 'lot' equals 1 kg. If you don't like this method, you can keep on adding 'lots' of 1,000 to itself until you get to 3,178. D'oh!

The road sign near the bridge says: Maximum height 2.5 m. If 1 ft (foot) = 30 cm, which of the following vehicle heights is the lowest height that would not be able to pass under the bridge?

[ ]	9 ft
[x]	8.5 ft
[ ]	7.5 ft
[ ]	8 ft

Obviously the highest number: 9 ft = 9 × 30 = 270 cm = 270 ÷ 100 = 2.7 m would not pass under the bridge BUT the lowest height that would not be able to pass under the bridge is 8.5 ft = 8.5 × 30 = 255 cm = 255 ÷ 100 = 2.55 m. It's 5 cm too high!

The volume of a balloon is 640 cm³. If air is escaping at 80 cm³ each minute, what will the volume of the balloon be after 5 minutes?

[ ]	400 cm³
[ ]	200 cm³
[x]	240 cm³
[ ]	440 cm³

Air is escaping at 80 cm³ each minute ? 5 × 80 = 400 cm³ will have escaped after 5 minutes. The air left in the balloon = 640 - 400 = 240 cm³. How fast or how slow something happens is called a 'rate', e.g. the balloon is losing air at the RATE of 80 cm³ per minute

Which of the following is the heaviest: 1 tonne; 1,000 kg; 1,000,000 g (one million)?

[x]	They are all the same
[ ]	1,000,000 g
[ ]	1,000 kg
[ ]	1 tonne

Learn this stuff!

A rectangular container is 40 cm deep, 40 cm wide and 50 cm long. If water from a tap is pouring in at 1,000 cm³ every minute, how long will it take before the tank is half full?

[ ]	44 min
[ ]	24 min
[ ]	14 min
[x]	40 min

The volume of the rectangular container is = 40 × 40 × 50 = 80,000 cm³. Half the volume = 40,000 cm³. If water from a tap is pouring in at 1,000 cm³ every minute, then it will take 40,000 ÷ 1,000 = 40 min to half fill the tank. You have to divide by 1,000 because you want to find out how many 'lots' of 1,000 there are in 40,000 : each 'lot' equals 1 minute. If you don't like this method, you can keep on adding 'lots' of 1,000 to itself until you get to 40,000. D'oh! How fast or how slow something happens is called a 'rate', e.g. the tank is filling at the RATE of 1,000 cm³ per minute

A van can carry 150 parcels: 50 parcels weigh 120,500 g, 35 parcels weigh 35.5 kg and the remaining 65 weigh 58 kg. What is the total weight of the parcels being carried by the van?

[ ]	241 kg
[x]	214 kg
[ ]	114 kg
[ ]	141 kg

120,500 g = 120.5 kg: just divide 120.5 by 1,000. Now add the weights: 120.5 + 35.5 + 58 = 214 kg

People used to weigh themselves in stones (st) and pounds (lb). There are 14 lb in 1 stone and 1 kg = 2.2 lb. If Henry weighs 13 st 10 lb, how much does he weigh in kilograms?

[ ]	422 kg
[ ]	78 kg
[x]	87 kg
[ ]	242 kg

13 st 10 lb = 13 × 14 + 10 = 192 lb. 1 kg = 2.2 lb ?192 lb = 192 ÷ 2.2 = 87.27 kg. You have to divide by 2.2 because you want to find out how many 'lots' of 2.2 there are in 192: each 'lot' equals 1 kg

If 1.61 km = 1 mile, how many kilometres would you have to travel in order to have travelled 245 miles?

[ ]	125 km
[ ]	152 km
[x]	394 km
[ ]	349 km

If 1.61 km = 1 mile, then 245 miles = 1.61 × 245 = 394.45 km