Changing the subject where the variable appears in multiple terms
I can change the subject where the desired variable appears in multiple terms.
Changing the subject where the variable appears in multiple terms
I can change the subject where the desired variable appears in multiple terms.
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- The variable to become the subject may appear in more than one term.
- It is possible the terms cannot be additively combined.
- In this situation, it is possible to factorise with one of the factors being the desired variable.
Keywords
Subject of an equation/formula - The subject of an equation/a formula is a variable that is expressed in terms of other variables. It should have an exponent of 1 and a coefficient of 1
Common misconception
Not fully isolating the required variable by leaving other terms containing the variable in the expression.
To make a variable the subject, it must be expressed in terms of other variables only. Factorising helps isolate a variable if it is in multiple terms.
To help you plan your year 11 maths lesson on: Changing the subject where the variable appears in multiple terms, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 11 maths lesson on: Changing the subject where the variable appears in multiple terms, download all teaching resources for free and adapt to suit your pupils' needs.
The starter quiz will activate and check your pupils' prior knowledge, with versions available both with and without answers in PDF format.
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The assessment exit quiz will test your pupils' understanding of the key learning points.
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Explore more key stage 4 maths lessons from the Algebraic fractions unit, dive into the full secondary maths curriculum, or learn more about lesson planning.
Licence
Starter quiz
6 Questions
