Daily Practice - Foundation Plus
Grades 4-6 - the Foundation / Higher crossover zone.
11th December 1999
- 1Ratio2 marks
Red and blue stickers are in the ratio 7 : 9. There are 98 red stickers. How many stickers are there altogether?
- 2Angles in Polygons2 marks
A regular polygon has an exterior angle of 20°. 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 10, the first being 0 < x <= 10. The frequencies in order are 7, 21, 11, 16, 3. Write down the modal class.
- 5Error Intervals2 marks
A number y is 30 when truncated to the nearest whole number. Write down the error interval for y.
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Every sheet is deterministic: the same date always regenerates the same five questions. All of December 1999, including the monthly compilation PDF.