### GCSE Maths Revision: Numerators, denominators and expressions

#### 29th March 2017

New GCSE Maths Syllabus

ALGEBRA - What is the numerator, denominator, expression? - the Key Facts

In order to do well in the New GCSE Maths Syllabus, it is crucial that you understand and

learn the definitions and meanings of keywords that relate to algebra.

Let’s take a look at each of these keywords:

● A numerator is the top number in a fraction. Such as 3 is the fraction ¾.

● A denominator is the bottom number in a fraction. It shows how many parts there

are. Such as 4 is the fraction ¾.

● Operators are the symbols, such as times (x), divide (%), plus (+), and minus (-).

● An expression is numbers, symbols and operators grouped together. This group

shows the value of something.

Across all examination boards, AQA, WJEC, Edexcel and more, you must also be able to

turn a sentence or procedure into an algebraic formula.

● Translate "the sum of 9 and x" into an algebraic expression.

This translates to "9 + x"

You must remember that when you are writing out an expression, "less than" is the opposite

way round to how it is written in a sentence.

● Translate "7 less than y" into an algebraic expression.

This translates to "y – 7"

When multiplying in an expression, the number is always first and the letter is always last.

● Translate "x multiplied by 8" into an algebraic expression.

This translates to "8x"

When dividing in an expression, the number or letter could come first or last, depending on

what the question is.

● Translate "7 divided by b" into an algebraic expression.

This translates to "  7 / b "

● Translate "the quotient of x and 4" into an algebraic expression.

This translates to "  x / 4 "

sentence into an algebraic expression, check out our ‘What is the numerator, denominator,

expression?’ song now!

#### Tags:

Back to all blog posts

### LEARNTHRUMUSIC BLOG

#### Keeping you posted

Keep up-to-date with the latest news, products and events from LearnThruMusic.