This deep dive covers Method: How to Substitute within Simplifying Expressions for GCSE Mathematics. Revise Simplifying Expressions in Algebra for GCSE Mathematics with 11 exam-style questions and 5 flashcards. This topic appears less often, but it can still be a useful differentiator on mixed-topic papers. It is section 9 of 18 in this topic. Use this deep dive to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 9 of 18
Practice
11 questions
Recall
5 flashcards
Method: How to Substitute
1
Write out the expression
Copy it exactly as given
2
Replace each letter with its value
Use brackets around the number, especially for negatives!
3
Follow BIDMAS to calculate
Brackets, Indices, Division/Multiplication, Addition/Subtraction
4
Write your final answer
Check it makes sense!