Higher
20th July 1983
- 1Speed and Density2 marks
A block has volume 75 cm^3 and density 7.5 g/cm^3. Work out its mass.
- 2Similar Shapes (Area and Volume)3 marks
Two similar shapes have lengths in the ratio 1 : 2. The smaller has an area of 21 cm^2. Work out the area of the larger.
- 3Conditional Probability3 marks
21 students study Spanish and 11 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
- 4Cumulative Frequency2 marks
Four classes in order have frequencies 5, 6, 10, 10. Write down the cumulative frequency at the end of the third class.
- 5Recurring Decimals to Fractions3 marks
Write the recurring decimal 0.777... as a fraction in its simplest form.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of July 1983, including the monthly compilation PDF.