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Adding and subtracting fractions
AQA GCSE Mathematics practice questions with step-by-step solutions
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Sample Questions
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EasyQuestion 1
[2 marks]Work out:
(a) 2/5 + 1/5
(b) 7/8 - 3/8
Solution for Question 1
MediumQuestion 2
[3 marks]Work out:
2/3 + 3/4
Give your answer as a mixed number.
Solution for Question 2
HardQuestion 3
[4 marks]Work out:
3 2/5 - 1 3/4
Give your answer as a mixed number in its simplest form.
Solution for Question 3
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Generate Unlimited QuestionsAbout Adding and subtracting fractions in AQA GCSE
To add or subtract fractions, they must have the same denominator. If they don't, find the lowest common denominator (LCD), convert both fractions, then add or subtract the numerators. The denominator stays the same.
For example: 2/3 + 1/4. The LCD of 3 and 4 is 12. Convert: 2/3 = 8/12 and 1/4 = 3/12. Then 8/12 + 3/12 = 11/12.
With mixed numbers, you can either convert to improper fractions first, or deal with the whole numbers and fractions separately. Always simplify your final answer if possible.
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