Foundation Plus
21st September 1972
- 1Best Buy Questions3 marks
A pack of 12 pencils costs £2.40. A pack of 36 costs £5.76. Which pack is better value?
- 2Spheres and Cones3 marks
A sphere has radius 12 cm. Work out its volume, leaving your answer in terms of pi.
- 3Venn Diagrams3 marks
In a Venn diagram, 7 are in A only, 5 in B only, 10 in both and 6 in neither. Work out the probability a random one is in both.
- 4Scatter Graphs3 marks
A line of best fit on a scatter graph has equation y = 9x + 33. Use it to estimate y when x = 2.
- 5Recurring Decimals to Fractions3 marks
Write the recurring decimal 0.555... 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 September 1972, including the monthly compilation PDF.