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Conversions & units practice questions with answers

Foundation and Higher · Grade 3

A second set of conversions & units 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 centimetres are in 7 metres?

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Answer: 700 cm

  1. 1 metre is 100 centimetres.
  2. 7 × 100 = 700.
  • Method (1): 1 metre is 100 centimetres.
  • Accuracy (1): Answer 700 cm

Question 2 Easy

How many millimetres are in 8 centimetres?

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Answer: 80 mm

  1. 1 centimetre is 10 millimetres.
  2. 8 × 10 = 80.
  • Method (1): 1 centimetre is 10 millimetres.
  • Accuracy (1): Answer 80 mm

Question 3 Medium

How many centimetres are in 11 metres?

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Answer: 1100 cm

  1. 1 metre is 100 centimetres.
  2. 11 × 100 = 1100.
  • Method (1): 1 metre is 100 centimetres.
  • Accuracy (1): Answer 1100 cm

Question 4 Medium

How many millimetres are in 12 centimetres?

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Answer: 120 mm

  1. 1 centimetre is 10 millimetres.
  2. 12 × 10 = 120.
  • Method (1): 1 centimetre is 10 millimetres.
  • Accuracy (1): Answer 120 mm

Question 5 Hard

How many centimetres are in 15 metres?

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Answer: 1500 cm

  1. 1 metre is 100 centimetres.
  2. 15 × 100 = 1500.
  • Method (1): 1 metre is 100 centimetres.
  • Accuracy (1): Answer 1500 cm

Question 6 Hard

How many millimetres are in 16 centimetres?

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Answer: 160 mm

  1. 1 centimetre is 10 millimetres.
  2. 16 × 10 = 160.
  • Method (1): 1 centimetre is 10 millimetres.
  • Accuracy (1): Answer 160 mm

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 metres are in 18 kilometres?

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Answer: 18000 m

  1. 1 kilometre is 1000 metres.
  2. 18 × 1000 = 18000.
  3. 18 km is 18000 m.
  • Method (1): 1 kilometre is 1000 metres.
  • Accuracy (1): Answer 18000 m

Quick checks

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

Check 1

How many metres are in 22 kilometres?

  1. 22000 m
  2. 2200 m
  3. 220 m
Show answer

22000 m The result is 22000 m.

Check 2

How many centimetres are in 23 metres?

  1. 2300 cm
  2. 230 cm
  3. 23000 cm
Show answer

2300 cm The result is 2300 cm.

Check 3

How many millimetres are in 24 centimetres?

  1. 240 mm
  2. 2400 mm
  3. 2.4 mm
Show answer

240 mm The result is 240 mm.

Check 4

How many metres are in 700 centimetres?

  1. 7 m
  2. 70000 m
  3. 70 m
Show answer

7 m The result is 7 m.

Check 5

How many metres are in 26 kilometres?

  1. 26000 m
  2. 2600 m
  3. 260 m
Show answer

26000 m The result is 26000 m.

Check 6

How many centimetres are in 27 metres?

  1. 2700 cm
  2. 270 cm
  3. 27000 cm
Show answer

2700 cm The result is 2700 cm.

Check 7

How many millimetres are in 28 centimetres?

  1. 280 mm
  2. 2800 mm
  3. 2.8 mm
Show answer

280 mm The result is 280 mm.

Check 8

How many metres are in 800 centimetres?

  1. 8 m
  2. 80000 m
  3. 80 m
Show answer

8 m The result is 8 m.

Check 9

How many metres are in 30 kilometres?

  1. 30000 m
  2. 3000 m
  3. 300 m
Show answer

30000 m The result is 30000 m.

Check 10

How many centimetres are in 31 metres?

  1. 3100 cm
  2. 310 cm
  3. 31000 cm
Show answer

3100 cm The result is 3100 cm.

Check 11

How many millimetres are in 32 centimetres?

  1. 320 mm
  2. 3200 mm
  3. 3.2 mm
Show answer

320 mm The result is 320 mm.

Check 12

How many metres are in 900 centimetres?

  1. 9 m
  2. 90000 m
  3. 90 m
Show answer

9 m The result is 9 m.

Check 13

How many metres are in 34 kilometres?

  1. 34000 m
  2. 3400 m
  3. 340 m
Show answer

34000 m The result is 34000 m.

Check 14

How many centimetres are in 35 metres?

  1. 3500 cm
  2. 350 cm
  3. 35000 cm
Show answer

3500 cm The result is 3500 cm.

Check 15

How many millimetres are in 36 centimetres?

  1. 360 mm
  2. 3600 mm
  3. 3.6 mm
Show answer

360 mm The result is 360 mm.

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