A5a – Rearranging formulas to change the subject

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Prerequisites
This topic also overlaps considerably with:

Skills check: Manipulating algebraic expressions

Part 1 – Rearranging formulas to change the subject (easy)

Teacher resources for Part 1

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  • Slides in PPTX (with click-to-reveal answers)
  • Slides in PDF (one slide per page, suitable for importing into IWB software)
Links to past exam questions

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Part 2 – Rearranging formulas where the variable to be made the subject has a negative coefficient and/or appears in a denominator

Teacher resources for Part 2

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  • Slides in PPTX (with click-to-reveal answers)
  • Slides in PDF (one slide per page, suitable for importing into IWB software)
Links to past exam questions

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Part 3 – Rearranging when the variable to be made the subject appears more than once (hard)

Teacher resources for Part 3

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  • Slides in PPTX (with click-to-reveal answers)
  • Slides in PDF (one slide per page, suitable for importing into IWB software)
Links to past exam questions

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In the real world

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What next?
Solving equations is a fundamental skill in algebra, and the principles involved in changing the subject are the same as those you will use to solve equations: