OCR Maths Fractions Revision Notes

• 1A fraction consists of a numerator and a denominator.
• 2To add or subtract fractions, they must have a common denominator.
• 3To multiply fractions, multiply the numerators and the denominators.
• 4To divide fractions, multiply by the reciprocal of the divisor.
• 5Fractions can be simplified by dividing the numerator and denominator by their greatest common divisor (GCD).

A fraction shows how many parts of a whole you have. The top number, called the numerator, tells you how many parts you have, while the bottom number, called the denominator, tells you how many equal parts the whole is divided into. To work with fractions, you can add, subtract, multiply, or divide them, but sometimes you need to make sure they have the same denominator or simplify them.