Daily Practice
Higher
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5th February 1990
- 1Standard Form3 marks
Work out (21 x 10^6) / (7 x 10^4). Give your answer in standard form.
- 2Solving Quadratics3 marks
Solve x^2 - 4x - 12 = 0.
- 3Repeated Percentage Change3 marks
A price rises by 25% and then falls by 15%. Work out the overall percentage change, to 2 decimal places.
- 4Perpendicular Lines and the equation of a tangent2 marks
A line has gradient -5. Work out the gradient of a line perpendicular to it.
- 5Conditional Probability3 marks
29 students study Spanish and 9 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of February 1990, including the monthly compilation PDF.