Edexcel IGCSE Math A 1.2.F add and subtract fractions and mixed numbers

Practise fraction addition and subtraction by converting mixed numbers, using common denominators and simplifying final answers.

Exam points

Use a common denominator to add or subtract fractions and reach a shown result.
Convert mixed numbers to improper fractions before adding or subtracting.
Simplify the final improper fraction or convert it back to a mixed number.

[Maximum number: 2]

Show that $\frac{8}{15}+\frac{3}{10}=\frac{5}{6}$

Example:
$\frac{16}{30}+\frac{9}{30}$
OR equivalent fractions with a common multiple denominator, e.g.
$\frac{80}{150}+\frac{45}{150}$

Then:
$\frac{16}{30}+\frac{9}{30}=\frac{25}{30}=\frac{5}{6}$

Shown.

Marking guidance:
- M1 for $\frac{16}{30}$ and $\frac{9}{30}$ , or both fractions as equivalent fractions with denominators that are a common multiple of 10 and 15
- A1 for a conclusion to the given answer from correct working showing all steps

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1.2.F Adding and subtracting fractions question 1