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Comparing lengths using ratio

31 self-marking GCSE and IGCSE practice questions on Comparing lengths using ratio, written specifically for AQA, Pearson, OCR, Pearson International GCSE Maths A (4MA1), Cambridge IGCSE Mathematics (0580), Cambridge IGCSE (9-1) Mathematics (0980) across Foundation and Higher and Core and Extended tier. Instant marking with full worked solutions on every question.

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Sample Comparing lengths using ratio questions

A few of the 31 questions, from easier to harder. Choose your exam board and tier to practise them, with every answer marked.

Question 12 marksGrade 3-4
Two similar triangles have corresponding bases of 5 m and 4 m. Write the ratio of the first base to the second base in the form a:b.
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The two corresponding bases are 5 m and 4 m
The ratio is $5:4$ M1
Check if this can be simplified: HCF of 5 and 4 is 1, so the ratio is already in simplest form. A1
Question 22 marksGrade 3-4
Two similar model cars have lengths in the ratio 4:5. The first model car has a length of 8 m. Work out the length of the second model car.
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What are the common mistakes in Comparing lengths using ratio?

When a pupil makes one of these on Revision Workshop, the marking engine names the mistake and explains it, instead of just marking the answer wrong.

Gives an intermediate value (e.g. before the final division/simplification) as the final answer
Solved for $x$ correctly but stopped there, without substituting back in to find the actual length of the second flag
Swaps the order of the parts within a ratio
Scaled using $\dfrac{2}{7}$ instead of $\dfrac{7}{2}$

Quick answers about Comparing lengths using ratio

How many Comparing lengths using ratio practice questions are there?: There are 31 self-marking GCSE and IGCSE Maths questions on Comparing lengths using ratio, written for AQA, Pearson, OCR, Pearson International GCSE Maths A (4MA1), Cambridge IGCSE Mathematics (0580), Cambridge IGCSE (9-1) Mathematics (0980) across Foundation and Higher and Core and Extended tier. Each one is marked instantly and has a full worked solution.
Do I need an account to practise Comparing lengths using ratio?: No. You can start practising Comparing lengths using ratio straight away without an account. A free account keeps your results across sessions, so you can see your progress on this topic over time.