OCRMathsExam Board Revision

OCR Maths Fractions Revision Notes

Master OCR Maths Fractions using simple revision notes, key facts and practice questions — all generated by AI for your exam.

Fractions represent parts of a whole and are expressed as a ratio of two integers, the numerator and the denominator. Understanding fractions is essential for various mathematical concepts, including division, ratios, and percentages.

Key Concepts

  • 1A fraction consists of a numerator (top number) and a denominator (bottom number).
  • 2Fractions can be simplified by dividing both the numerator and denominator by their greatest common divisor (GCD).
  • 3To add or subtract fractions, they must have a common denominator.
  • 4Multiplying fractions involves multiplying the numerators together and the denominators together.
  • 5Dividing fractions requires multiplying by the reciprocal of the divisor.

Simple Explanation

A fraction shows how many parts of a whole we have. The top number tells us how many parts we have (the numerator), and the bottom number tells us how many equal parts the whole is divided into (the denominator). For example, in the fraction 3/4, we have 3 out of 4 equal parts. Understanding how to work with fractions helps us solve problems in everyday life and in more advanced math.

Memory Trick

“Remember 'Top over Bottom' for fractions: the numerator is always on top, and the denominator is always on the bottom.”

Flashcards

Question1 / 5

What is the numerator in a fraction?

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Exam Questions

Describe and explain how to simplify the fraction 12/16. [6 marks]

6 marks
View mark scheme hint▾

Identify the GCD, divide both numbers, show the simplified fraction.

Explain how to add the fractions 1/3 and 1/6. [4 marks]

4 marks
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Find a common denominator, convert fractions, add, and simplify if necessary.

What is meant by a mixed number? [2 marks]

2 marks
View mark scheme hint▾

Define a mixed number and give an example.

Practice Quiz

Question 1 of 5Score: 0

What is 1/2 + 1/4?

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