Higher
21st October 1982
- 1Standard Form2 marks
Work out (7 x 10^8) x (9 x 10^6). Give your answer in standard form.
- 2Quadratic Formula3 marks
Use the quadratic formula to solve x^2 - 11x - 9 = 0, to 2 decimal places.
- 3Repeated Percentage Change3 marks
A town's population is 14000 and grows by 5% each year. Work out the population after 6 years, to the nearest whole number.
- 4Similar Shapes (Area and Volume)3 marks
Two similar shapes have lengths in the ratio 1 : 2. The smaller has an area of 30 cm^2. Work out the area of the larger.
- 5Conditional Probability3 marks
24 students study Spanish and 8 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 October 1982, including the monthly compilation PDF.