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Metric conversions practice questions with answers

Foundation · Grade 1

A second set of metric conversions questions for GCSE Maths. They are different from the ones on the topic page, so work through both. Try each question, then open the answer to check your working.

More questions

Question 1 Easy

How many metres are in 5 km?

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Answer: 5000

  1. 5 × 1 000 = 5 000.
  2. There are 5 000 m.
  • Method (1): 5 × 1 000 = 5 000.
  • Accuracy (1): Answer 5000

Question 2 Easy

How many centimetres are in 80 mm?

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Answer: 8

  1. 80 ÷ 10 = 8.
  2. There are 8 cm.
  • Method (1): 80 ÷ 10 = 8.
  • Accuracy (1): Answer 8

Question 3 Medium

A desk is 1.2 m wide. How many centimetres is that?

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Answer: 120

  1. 1.2 × 100 = 120.
  2. The desk is 120 cm wide.
  • Method (1): 1.2 × 100 = 120.
  • Accuracy (1): Answer 120

Question 4 Medium

How many metres are in 4 200 cm?

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Answer: 42

  1. 4 200 ÷ 100 = 42.
  2. That is 42 m.
  • Method (1): 4 200 ÷ 100 = 42.
  • Accuracy (1): Answer 42

Question 5 Hard

Convert 2 500 ml to litres.

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Answer: 2.5

  1. 2 500 ÷ 1 000 = 2.5.
  2. That is 2.5 litres.
  • Method (1): 2 500 ÷ 1 000 = 2.5.
  • Accuracy (1): Answer 2.5

Question 6 Hard

A nail is 2 cm long. How many millimetres is a row of 6 nails placed end to end?

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Answer: 120

  1. 2 × 10 = 20 mm for one nail.
  2. 20 × 6 = 120 mm.
  • Method (1): 2 × 10 = 20 mm for one nail.
  • Accuracy (1): Answer 120

Exam-style question

A longer question with marks, in the style of a written paper. This is a Yumio practice question, not a past paper question.

Exam-style question 12 marks

How many grams are in 2.5 kg?

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Answer: 2500

  1. 2.5 × 1 000 = 2 500.
  2. The mass is 2 500 g.
  • Method (1): Multiplies by 1 000
  • Accuracy (1): Answer 2 500

Quick checks

Short one-step questions. Pick an option before you open the answer.

Check 1

How many mm in 1 cm?

  1. 10
  2. 100
  3. 1 000
Show answer

10 A centimetre is ten millimetres.

Check 2

How many cm in 1 m?

  1. 100
  2. 10
  3. 1 000
Show answer

100 A metre is one hundred centimetres.

Check 3

How many m in 1 km?

  1. 1 000
  2. 100
  3. 10
Show answer

1 000 A kilometre is one thousand metres.

Check 4

How many g in 1 kg?

  1. 1 000
  2. 100
  3. 10
Show answer

1 000 A kilogram is one thousand grams.

Check 5

How many ml in 1 litre?

  1. 1 000
  2. 100
  3. 60
Show answer

1 000 A litre is one thousand millilitres.

Check 6

To change m into cm you

  1. multiply by 100
  2. divide by 100
  3. multiply by 10
Show answer

multiply by 100 The smaller unit needs a bigger count.

Check 7

To change g into kg you

  1. divide by 1 000
  2. multiply by 1 000
  3. divide by 100
Show answer

divide by 1 000 The larger unit needs a smaller count.

Check 8

How many cm is 50 mm?

  1. 5
  2. 500
  3. 15
Show answer

5 50 ÷ 10 = 5.

Check 9

How many m is 3 km?

  1. 3 000
  2. 300
  3. 30
Show answer

3 000 3 × 1 000 = 3 000.

Check 10

Which unit suits a spoon of medicine?

  1. millilitres
  2. litres
  3. kilometres
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millilitres A spoon is a small capacity.

Check 11

Which unit suits the distance between two towns?

  1. kilometres
  2. centimetres
  3. millimetres
Show answer

kilometres Towns are far apart.

Check 12

How many mm in 1 m?

  1. 1 000
  2. 100
  3. 10
Show answer

1 000 100 cm × 10 mm.

Check 13

0.5 kg in grams is

  1. 500
  2. 50
  3. 5 000
Show answer

500 Half of 1 000 is 500.

Check 14

2 litres in ml is

  1. 2 000
  2. 200
  3. 20
Show answer

2 000 2 × 1 000 = 2 000.

Check 15

Is 150 cm more than 1 m?

  1. Yes
  2. No
  3. They are equal
Show answer

Yes 150 cm = 1.5 m, which is more than 1 m.

Keep going with Metric conversions

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