Daily Practice

Foundation Plus

12th February 1981

5 questions · 12 marks · Grades 4-6 · 128 question types in this band

1
Best Buy Questions3 marks
A pack of 11 batteries costs £6.05. A pack of 44 costs £23.32. Which pack is better value?
2
Angles in Polygons2 marks
A regular polygon has an exterior angle of 30°. How many sides does it have?
3
Probability Trees3 marks
2 of 5 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Box Plots2 marks
A box plot has minimum 8, lower quartile 11, median 20, upper quartile 30 and maximum 38. Work out the interquartile range.
5
Error Intervals2 marks
A number y is 19 when truncated to the nearest whole number. Write down the error interval for y.

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