Daily Practice - Foundation Plus
Grades 4-6 - the Foundation / Higher crossover zone.
19th January 2013
- 1Ratio2 marks
Red and blue stickers are in the ratio 3 : 4. There are 24 red stickers. How many stickers are there altogether?
- 2Angles in Polygons2 marks
A regular polygon has an exterior angle of 60°. How many sides does it have?
- 3Probability Trees3 marks
2 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
20 voles are marked and released. Later 21 are caught, of which 7 are marked. Estimate the population.
- 5Error Intervals2 marks
A number y is 25 when truncated to the nearest whole number. Write down the error interval for y.
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