1MA0 Higher June 2017 Paper 1 Q18
18
(a) Write 5 400 000 as a number in standard form. (1)
(b) Write \(3.2 \times 10^{-4}\) as an ordinary number. (1)
The mass of the Sun is \(2 \times 10^{30}\) kg.
The mass of the largest known star is 315 times the mass of the Sun.
(c) Work out the mass of this star.
Give your answer in kg in standard form. (2)
Give your answer in kg in standard form. (2)
| Answer | Mark | Notes |
|---|---|---|
| \(5.4 \times 10^6\) | 1 | B1 cao |
| Answer | Mark | Notes |
|---|---|---|
| 0.00032 | 1 | B1 cao |
| Answer | Mark | Notes |
|---|---|---|
| \(6.3 \times 10^{32}\) | 2 | M1 for \(630 \times 10^{30}\) oe or figures 63 with \(\times 10^n\) A1 for \(6.3 \times 10^{32}\) or \(6.30 \times 10^{32}\) |