Daily Practice

Foundation Plus

7th January 1988

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

1
Best Buy Questions3 marks
A pack of 9 sponges costs £4.50. A pack of 18 costs £8.28. Which pack is better value?
2
Angles in Polygons2 marks
A regular polygon has an exterior angle of 40°. How many sides does it have?
3
Probability Trees3 marks
3 of 6 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Averages from Frequency Tables2 marks
Grouped data has five classes of width 10, the first being 40 < x <= 50. The frequencies in order are 11, 21, 7, 3, 16. Write down the modal class.
5
Error Intervals2 marks
A number y is 73 when truncated to the nearest whole number. Write down the error interval for y.

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