Subtracting fractions in GCSE mathematics
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The document outlines a method called the 'crossbow method' for subtracting fractions, which is similar to adding fractions but involves subtraction of the top numbers. It provides examples with step-by-step calculations to demonstrate how to apply this method effectively. The method simplifies the process of subtracting fractions by leveraging a clear, structured approach.
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Subtracting fractions in GCSE mathematics
- 2. Subtracting fractions is relatively easy if you have a method to use! Here, I have provided you with a GREAT way to practice these types of questions using a particular method. ‘Crossbow Method’ This is method is exactly the same for adding fractions, but instead of adding the two top numbers of the fraction, you subtract! 1 2 2 3 1 4 3 6
- 3. Example 1 2 3 1 4 How to work it out: REMEMBER: Crossbow 2 3 1 4 = 8 − 3 2 3 1 4 = 8 − 3 12 = 5 15 1 2 2 3 1 4 3 6 = 1 3 _ _ _
- 4. Example 2 5 7 3 5 How to work it out: REMEMBER: Crossbow 5 7 3 5 = 25 − 21 5 7 3 5 = 25 − 21 35 = 4 35 1 2 2 3 1 4 3 6 _ _ _
- 5. Example 3 4 5 1 2 _ How to work it out: REMEMBER: Crossbow 4 5 1 2 = 8 − 5 4 5 1 2 = 8 − 5 10 = 3 10 1 2 2 3 1 4 3 6 _ _