Write these in algebraic notation:
a) "5 times a number x"
b) "a number y, multiplied by itself"
c) "3 less than twice a number n"
Part a "5 times a number x"
5 times x means 5 × x
In algebra we write this as: 5x
Part b "a number y, multiplied by itself"
y multiplied by itself means y × y
In algebra we use powers: y²
Part c "3 less than twice a number n"
"Twice n" means 2 × n = 2n
"3 less than" means subtract 3
Answer: 2n − 3
This study notes covers Worked Example: Translating Words to Algebra within Algebraic Notation for GCSE Mathematics. Revise Algebraic Notation in Algebra for GCSE Mathematics with 13 exam-style questions and 4 flashcards. This topic appears less often, but it can still be a useful differentiator on mixed-topic papers. It is section 4 of 7 in this topic. Use this study notes to connect the idea to the wider topic before moving on to questions and flashcards.
Practice questions for Algebraic Notation
In the expression 7x, what is the coefficient?
Explain the difference between an equation and an identity. Give one example of each.