Higher November 2019 Paper 5 Q1
1
(a) Work out.
\(\dfrac{3}{4} + \dfrac{1}{6}\)
Give your answer in its simplest form. [2]
(b) By writing each number correct to 1 significant figure, use estimation to show that
\(\dfrac{39.6 \times 20.2}{\sqrt{99.2}} \approx 80\). [3]
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| \(\frac{11}{12}\) final answer | 2 | M1 for \(\frac{11k}{12k}\) or \(\frac{9k}{12k}\) [+] \(\frac{2k}{12k}\) | \(k\) = positive integer |
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| \(\frac{40 \times 20}{\sqrt{100}}\) | M1 | For M1 allow 2 correct If more than one attempt, mark the better oe allow cancelling in fraction with 10 and 40 or 20 | |
| 800 ÷ 10 = 80 | A2 | A1 for 800 or 10 | |