Foundation Plus
8th August 1981
- 1Averages from Frequency Tables2 marks
Grouped data has five classes of width 5, the first being 20 < x <= 25. The frequencies in order are 11, 7, 21, 16, 3. Write down the modal class.
- 2Indices2 marks
Write 8^9 x 8^3 as a single power of 8.
- 3Solving Simultaneous Equations Graphically3 marks
The lines y = -3x + 1 and y = 4x + 15 are drawn. Write down the coordinates of the point where they cross.
- 4Ratio2 marks
Red and blue sweets are in the ratio 5 : 6. There are 65 red sweets. How many sweets are there altogether?
- 5Cylinders2 marks
A cylinder has radius 5 cm and height 16 cm. Work out its curved surface area, to 1 decimal place.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of August 1981, including the monthly compilation PDF.