Higher November 2017 Unit 1 Q5
5.
(a) Express 0·000 42 in standard form. [1]
(b) Calculate the value of \(\dfrac{7{\cdot}2 \times 10^{6}}{2 \times 10^{-2}}\).
Give your answer in standard form. [1]
Give your answer in standard form. [1]
(c) Calculate the value of \((4{\cdot}7 \times 10^{5}) - (6{\cdot}2 \times 10^{4})\).
Give your answer in standard form. [2]
Give your answer in standard form. [2]
| Scheme | Marks | Comments |
|---|---|---|
| \(4{\cdot}2 \times 10^{-4}\) | B1 |
| Scheme | Marks | Comments |
|---|---|---|
| \(3{\cdot}6 \times 10^{8}\) | B1 |
| Scheme | Marks | Comments |
|---|---|---|
| \(4{\cdot}08 \times 10^{5}\) | B2 | B1 for sight of any correct value but not in standard form. e.g. \(40{\cdot}8 \times 10^{4}\) or 408 000. |