Daily Practice - Foundation Plus
Grades 4-6 - the Foundation / Higher crossover zone.
14th October 2010
- 1Best Buy Questions3 marks
A pack of 7 sponges costs £2.80. A pack of 14 costs £5.46. Which pack is better value?
- 2Angles in Polygons2 marks
A regular polygon has an exterior angle of 15°. How many sides does it have?
- 3Probability Trees3 marks
5 of 7 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 4Averages from Frequency Tables2 marks
Grouped data has five classes of width 5, the first being 5 < x <= 10. The frequencies in order are 11, 16, 21, 3, 7. Write down the modal class.
- 5Error Intervals2 marks
A number y is 46 when truncated to the nearest whole number. Write down the error interval for y.
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