Robinson Tuition
Grade 2 · Foundation · free GCSE maths worksheet

Converting metric units

mm, cm, m, km, g, kg, ml and litres.

17 original questions, 33 marks. Print the worksheet, mark it with the answers sheet, and use the solutions to see every step written out by hand.

Worksheet PDFWorked solutions PDFAnswers PDF

The questions

1

Change 7 cm into mm.

1 mark
Show answer
70
2

Change 4.5 m into cm.

1 mark
Show answer
450
3

Convert

  1. 3.5 km to metres
  2. 2.3 litres to millilitres
  3. 450 g to kilograms
3 marks
Show answer
a) 3500 m b) 2300 ml c) 0.45 kg
4

Fill in the missing number in each statement.

  1. 1 km = ___ m
  2. 1 cm = ___ mm
  3. 1 kg = ___ g
  4. 1 litre = ___ ml
4 marks
Show answer
a) 1000 b) 10 c) 1000 d) 1000
5

Change 82 mm into cm.

1 mark
Show answer
8.2
6

Convert

  1. 4 tonnes to kilograms
  2. 2500 kg to tonnes
2 marks
Show answer
a) 4000 kg b) 2.5 tonnes
7

Here are three lengths: 0.8 m, 75 cm, 760 mm

Write the lengths in order, starting with the shortest. Show your working.

3 marks
Show answer
75 cm, 760 mm, 0.8 m
8

Change 3.2 km into metres.

1 mark
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3200
9

Ravi is 1.45 m tall. His sister is 98 cm tall.

Work out their total height. Give your answer in metres.

3 marks
Show answer
2.43 m
10

Change 2600 g into kg.

1 mark
Show answer
2.6
11

Change 0.75 litres into millilitres.

1 mark
Show answer
750
12

Change 640 cm into metres.

1 mark
Show answer
6.4
13

Write down a sensible metric unit for measuring the mass of an apple.

1 mark
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grams
14

Jack is 1.62 m tall.

Ben is 158 cm tall.

Who is taller, and by how many centimetres?

2 marks
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Jack, by 4 cm
15

Complete these statements.

  1. 5.4 kg = ______ g
  2. 230 cm = ______ m
2 marks
Show answer
a) 5400 b) 2.3
16

A bottle holds 1.5 litres of apple juice.

Mia fills 6 glasses from the bottle.

Each glass holds 180 ml.

Work out how much juice is left in the bottle.

Give your answer in millilitres.

3 marks
Show answer
420
17

A watering can holds 4.5 litres when full.

Rosa pours in 1.2 litres of water, then 600 ml, then 750 ml.

Work out how much more water Rosa needs to pour in to fill the can.

Give your answer in millilitres.

3 marks
Show answer
1950

Every question here is original and written by Robinson Tuition. The grade follows the Edexcel grade descriptors and suits AQA and OCR too; this is not an exam-board paper.

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