O-LevelMathematicsNumber4024/12 · Oct/Nov 2019 · Q113 Marks
Express 4500 × 1000² in standard form.
- (a)Express 4500 × 1000² in standard form.[1]
- (b)Giving your answer in standard form, evaluate 2.4 × 10⁻⁸ / 4 × 10⁻³.[2]
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2019). The mark or mark type is shown in brackets.
- [1] (a) 4.5 x 10⁹ cao
- [2] (b) 6 x 10⁻⁶ cao B1 for 0.6 × 10⁻⁵ seen or for 0.000 006 seen or for final answer A × 10⁻⁶ with 1 < A < 10
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