Foundation Plus
21st October 1988
- 1Scale Drawings2 marks
A map has a scale of 1 : 10000. Two villages are 7.5 cm apart on the map. How far apart are they in real life, in km?
- 2Angles in Polygons2 marks
A regular polygon has an exterior angle of 36°. How many sides does it have?
- 3Probability Trees3 marks
6 of 9 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 4Scatter Graphs3 marks
A line of best fit on a scatter graph has equation y = 8x + 7. Use it to estimate y when x = 9.
- 5Error Intervals2 marks
A number y is 5 when truncated to the nearest whole number. Write down the error interval for y.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of October 1988, including the monthly compilation PDF.