This video is all about how to change the subject of a formula, and is aimed at around grade 5 GCSE maths.
Make h the subject of the formula
M = √((2h + 1)/3)
These types of questions appear in all the main examination boards, including Edexcel, AQA and OCR. They are popular and, once you have the basic principles, fairly similar. Please do stop the video, try the question and compare your solution!
- Always work down the page with the equals sign in the middle
- Always show your working
- Try to keep a positive value of your subject
- Learn to read right to left – as well as left to right
Algebra skills are very useful during GCSE exams – and can certainly represent over 1/4 of the questions; it's definitely good to practice as much as possible.
Here's a copy of the questions: Quick Test Rearranging formulas
Here's a copy of the answers: Quick Test – Rearranging formulae ANSWERS
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Please do leave a comment below if you are not sure. Alternately you can view my YouTube channel and leave a comment there – I'll always try to respond as quickly as possible.