Higher November 2021 Paper 1 Q3
3 Work out \(4\dfrac{1}{5} - 2\dfrac{2}{3}\)
Give your answer as a mixed number. (3)
| Answer | Mark | Mark scheme |
|---|---|---|
| \(1\dfrac{8}{15}\) | M2 | for a complete method, eg \(4 - 2 + \dfrac{3}{15} - \dfrac{10}{15}\) condoning error with one numerator or for \(\dfrac{21}{5} - \dfrac{8}{3} = \dfrac{63}{15} - \dfrac{40}{15}\ \left(= \dfrac{23}{15}\right)\) with no more than one error |
| (M1 | for finding two fractions with a correct common denominator, with at least one correct corresponding numerator, eg \(\dfrac{3}{15}, \dfrac{10}{15}\) or for converting both to improper fractions, eg \(\dfrac{21}{5}, \dfrac{8}{3}\)) | |
| A1 | \(1\dfrac{8}{15}\) oe |
Additional guidance
At least one improper fraction must be correct
Any equivalents must be a mixed number