Ratio in real contexts: conversion and comparison

Sample Ratio in real contexts: conversion and comparison questions

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

1. Question 12 marksGrade 2
   The ratio 20 : 50 can be written in the form 1 : n. Find the value of n.
   Show the worked solution

   20 : 50. Dividing both sides by 20: 1 : 2.5. So n = 2.5. M1 A1
2. Question 22 marksGrade 4-5
   Kai mixes orange squash and water in the ratio 1:4. Kai uses 2 ml of orange squash. Work out how much water Kai needs.
   Show the worked solution

   One part of the ratio is worth: $2 \div 1 = 2$

What are the common mistakes in Ratio in real contexts: conversion and comparison?

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.

• Compares raw counts rather than proportions when the groups being compared are different sizes

  Compared the raw number of green sweets in each jar instead of converting each to a common unit (a fraction or percentage of the total) before comparing

• Skips finding the value of one share/part of a ratio before scaling up the total

  Multiplied the known quantity (10 g) directly by 3 instead of first dividing by 5 to find the value of one part

• Swaps which part of the ratio corresponds to which quantity

  Matched the known quantity to the wrong part of the ratio

Quick answers about Ratio in real contexts: conversion and comparison

How many Ratio in real contexts: conversion and comparison practice questions are there?

There are 31 self-marking GCSE and IGCSE Maths questions on Ratio in real contexts: conversion and comparison, 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 Ratio in real contexts: conversion and comparison?

No. You can start practising Ratio in real contexts: conversion and comparison straight away without an account. A free account keeps your results across sessions, so you can see your progress on this topic over time.