Foundation November 2017 Paper 1 Q10
10.
(a) Work out \(5^2 + \sqrt{49}\). [2]
(b)
By first rounding each number in the calculation to 1 significant figure, estimate the value of \(\dfrac{42 \times 96}{11}\).
You must show all your working. [2]
| Scheme | Marks | Comments |
|---|---|---|
| 32 | B2 | B1 for \((5^2 =)\ 25\) or for \((\sqrt{49} =)\ 7\) |
| Scheme | Marks | Comments |
|---|---|---|
| \(\dfrac{40 \times 100}{10}\) | M1 | for any two values correctly rounded |
| 400 | A1 | |
| (4) |