This Year 3 length, perimeter, mass and capacity test lasts 30 minutes and is marked out of 20. It covers the whole chapter for pupils aged 7-8, and the full answers are on a separate page.
- β±οΈ Duration : 30 min
- π― Total : 20 marks
- β 5 questions
Question 1 β Convert
Complete each conversion.
- 4 m 30 cm = __ cm (1 mark)
- 3000 g = __ kg (1 mark)
- 2 l 250 ml = __ ml (1 mark)
- 600 cm = __ m (1 mark)
Question 2 β Perimeter
A rectangle is 14 cm long and 6 cm wide.
- Work out its perimeter. Show your working. (2 marks)
- A square has the same perimeter. How long is each side? (2 marks)
Question 3 β Mass and capacity
Answer each question.
- A bag of flour has a mass of 1 kg. Ben uses 350 g. What mass is left? (1 mark)
- A jug holds 2 l. Mia pours out 1 l 200 ml. How much is left? (1 mark)
- Which unit would you use for a spoon of medicine: ml or l? (1 mark)
- Which unit would you use for the mass of a pencil: g or kg? (1 mark)
Question 4 β Comparing measures
Here are three ropes: A is 1 m 20 cm, B is 95 cm and C is 1 m 5 cm.
- Write all three lengths in centimetres. (2 marks)
- Put the ropes in order, shortest first. (1 mark)
- How much longer is A than B? (1 mark)
Question 5 β Problem: the school playground
The school playground is a rectangle 30 m long and 20 m wide. The caretaker puts a rope all round it. The rope costs Β£2 for every metre.
- What is the perimeter of the playground? (2 marks)
- How much does the rope cost? (1 mark)
- The caretaker only has 80 m of rope. How much more does he need? (1 mark)
How to use this Year 3 length, perimeter, mass and capacity test
First, revise with the length, perimeter, mass and capacity lesson and the worksheet. Then sit the test in one go, with a timer set to 30 minutes. After that, mark your work with the length, perimeter, mass and capacity test answers. If you lose marks on a question, redo it the next day without help.
Finally, you can download this Year 3 length, perimeter, mass and capacity test as a PDF and print it like a real exam paper. Moreover, all the pages of this chapter work together, so you can move between them at any time. For example, many pupils read the lesson on Monday, practise on Wednesday and test themselves on Friday.


















