Daily Practice - Foundation Plus
Grades 4-6 - the Foundation / Higher crossover zone.
22nd August 2020
- 1Ratio2 marks
Red and blue marbles are in the ratio 4 : 9. There are 40 red marbles. How many marbles are there altogether?
- 2Angles in Polygons2 marks
A regular polygon has an exterior angle of 18°. How many sides does it have?
- 3Probability Trees3 marks
4 of 8 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 4Capture Recapture3 marks
15 fish are marked and released. Later 40 are caught, of which 5 are marked. Estimate the population.
- 5Error Intervals2 marks
A number y is 55 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 August 2020, including the monthly compilation PDF.