June 2019 Paper 1 Q2
2 Write \(\quad \dfrac{5}{6a} + \dfrac{a}{4} \quad\) as a single fraction.
Give your answer in its simplest form. [2 marks]
| Answer | Mark | Comments |
|---|---|---|
| Both fractions written with a common denominator (could be written as a single fraction) which is a multiple of \(6a\) and 4 with at least one correct (term of the) numerator | M1 | oe eg \(\ \dfrac{20}{24a}\ \) or \(\ \dfrac{6a^2}{24a}\ \) or \(\ \dfrac{4(5)}{4(6a)}\) or \(\ \dfrac{20+6a^2}{24a}\) allow decimals in fraction eg \(\ \dfrac{5+1.5a^2}{6a}\) |
| \(\dfrac{10+3a^2}{12a}\) | A1 |
Additional guidance
| Penalise further working | |
| \(\dfrac{10+3a^2}{12}\ \) is likely to come from correct working | M1, A0 |