Foundation Plus
7th December 1978
- 1Best Buy Questions3 marks
A pack of 7 teabags costs £2.10. A pack of 21 costs £5.46. Which pack is better value?
- 2Spheres and Cones3 marks
A sphere has radius 18 cm. Work out its volume, leaving your answer in terms of pi.
- 3Venn Diagrams3 marks
In a Venn diagram, 9 are in A only, 11 in B only, 10 in both and 9 in neither. Work out the probability a random one is in both.
- 4Frequency Trees3 marks
200 people were surveyed. 40 were adults, of whom 15 said yes. 10 of the children said yes. How many said yes altogether?
- 5Recurring Decimals to Fractions3 marks
Write the recurring decimal 0.333... 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 December 1978, including the monthly compilation PDF.