Foundation November 2021 Paper 1 Q17
17 Work out \(\quad \dfrac{5}{6} + \dfrac{7}{12}\)
Give your answer as a mixed number. [3 marks]
| Answer | Mark | Comments |
|---|---|---|
| \(\left(\dfrac{5}{6} =\right) \dfrac{10}{12}\) or converts both fractions to a common denominator with at least one correct | M1 | eg \(\dfrac{60}{72}\) (+) \(\dfrac{42}{72}\) |
| \(\dfrac{17}{12}\) | A1 | oe improper fraction eg \(\dfrac{102}{72}\) |
| \(1\dfrac{5}{12}\) | B1ft | oe mixed number eg \(1\dfrac{30}{72}\) ft correct conversion of an improper fraction to a mixed number |
Additional guidance
| \(1\dfrac{30}{72}\) | M1A1B1 |
| \(1\dfrac{5}{12}\) seen in working with \(\dfrac{17}{12}\) on answer line | M1A1B0 |
| \(\dfrac{17}{12}\) (=) \(1\dfrac{5}{12}\) (final answer is the mixed number) | M1A1B1 |
| \(1\dfrac{5}{12}\) (=) \(\dfrac{17}{12}\) (final answer is the improper fraction) | M1A1B0 |