Higher June 2019 Paper 1 Q11
11.
(a) Find the value of \((3\times10^{17})\times(8\times10^{9})\).
Give your answer in standard form. [2]
Give your answer in standard form. [2]
(b) In a particular country for one year:
Give your answer in standard form. [3]
- the total energy consumption was \(5{\cdot}4\times10^{11}\) kilowatt hours,
- the average energy consumption per person was 6000 kilowatt hours.
Give your answer in standard form. [3]
| Scheme | Marks | Comments |
|---|---|---|
| \(2.4\times10^{27}\) | B2 | B1 for \(24\times10^{26}\) oe |
| Scheme | Marks | Comments |
|---|---|---|
| \(\dfrac{5.4\times10^{11}}{6000}\) | M1 | si |
| \(\dfrac{5.4\times10^{11}}{6\times10^{3}}\) or \(\dfrac{540\,000\,000\,000}{6000}\) | M1 | oe, si |
| \(9\times10^{7}\) | A1 | CAO; accept trailing zeros e.g. \(9.0\times10^{7}\); mark final answer Award M1 M1 A0 for answers of \(0.9\times10^{8}\) or 90 000 000 |
| (5) |