1. Edexcel GCSE Maths Spec B – Modular: Booster C © Pearson Education 2010. This document may have been altered from the original. To learn a useful way of adding or subtracting fractions. Objectives

2. Edexcel GCSE Maths Spec B – Modular: Booster C © Pearson Education 2010. This document may have been altered from the original. To add two fractions using equivalent fractions. Example:

3. Edexcel GCSE Maths Spec B – Modular: Booster C © Pearson Education 2010. This document may have been altered from the original. First we need to re-write each fraction using equivalent fractions. x7 x4 We have used 28ths because 28 is the lowest common multiple of 4 and 7.

4. Edexcel GCSE Maths Spec B – Modular: Booster C © Pearson Education 2010. This document may have been altered from the original. x7 x4

5. Edexcel GCSE Maths Spec B – Modular: Booster C © Pearson Education 2010. This document may have been altered from the original. Make sure that you look at all of the denominators and find the lowest common multiple. Summary Re-write each fraction by multiplying the numerator and denominator by an appropriate whole number. Add the fractions together once you have the same denominator.