Rearranging formulae

Sample Rearranging formulae questions

A few of the 56 questions, from easier to harder. Choose your exam board and tier to practise them, with every answer marked.

1. Question 12 marksGrade 4-5
   Make $x$ the subject of the formula $y = 7x - 14$.
   Show the worked solution

   Start: $y = 7x - 14$

What are the common mistakes in Rearranging formulae?

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.

• Applies an operation to only one side of an equation when rearranging

  Collected the $x$ terms but did not also move the 1 term to the other side

• Mishandles the sign of a term when moving it across the equals sign

  Added the $x$ terms together instead of subtracting when collecting them onto one side

• Applies the inverse operations in the wrong order when rearranging a formula

  Divides by 2 before subtracting 1, rearranging M = 2n + 1 as n = M/2 - 1 instead of correctly subtracting 1 first to get n = (M - 1)/2.

Quick answers about Rearranging formulae

How many Rearranging formulae practice questions are there?

There are 56 self-marking GCSE and IGCSE Maths questions on Rearranging formulae, 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 Rearranging formulae?

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