GCSE Maths (Edexcel)
435 videos | 33 hours
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Number
Structure and Calculation
Adding & Subtracting Fractions
7:57
Fraction Calculations
Spec
N2
N8
- Fractions can be added together when their denominators are the same
- To add fractions with different denominators, find the lowest common multiple of the denominators
- Multiply the numerators and denominators by the same number to make the denominators the same
- Add the numerators and keep the denominator the same
- Simplify the fraction if possible by dividing the numerator and denominator by their greatest common factor
- The same principles apply for subtracting fractions with different denominators
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