Composite bar charts

Sample Composite bar charts questions

A few of the 36 questions, from easier to harder. Choose your exam board and tier to practise them, with every answer marked.

1. Question 14 marksGrade 3
   A composite bar chart shows the number of boys and girls in some classes. (a) How many students are in the Physics class in total? (b) Which two classes have the same total number of students? In the History class there are 18 students, and the number of boys equals the number of girls. (c)(i) Work out the number of boys in the History class. (c)(ii) Work out the number of girls in the History class.

What are the common mistakes in Composite bar charts?

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.

• Mixes up which part of the data corresponds to adults and which to children

  Gave the number of adults instead of subtracting to find the number of children.

• Calculates a percentage of the wrong part of the data (e.g. the whole instead of one category)

  Calculated the percentage using the adults figure instead of the children figure.

• Adds a subtotal to the overall total instead of subtracting it to find the remaining category

  Adds the adults total to the overall total (36 + 18 = 54) instead of subtracting the adults from the total to find the number of children who visited.

Quick answers about Composite bar charts

How many Composite bar charts practice questions are there?

There are 36 self-marking GCSE and IGCSE Maths questions on Composite bar charts, 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 Composite bar charts?

No. You can start practising Composite bar charts straight away without an account. A free account keeps your results across sessions, so you can see your progress on this topic over time.