Daily Practice

Foundation Plus

22nd February 1986

5 questions · 11 marks · Grades 4-6 · 128 question types in this band

1
Ratio2 marks
Red and blue marbles are in the ratio 3 : 5. There are 12 red marbles. How many marbles are there altogether?
2
Angles in Polygons2 marks
A regular polygon has an exterior angle of 18°. How many sides does it have?
3
Probability Trees3 marks
4 of 9 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Cumulative Frequency2 marks
A cumulative frequency graph is drawn for 104 values. What cumulative frequency do you read across from to estimate the lower quartile?
5
Error Intervals2 marks
A number y is 14 when truncated to the nearest whole number. Write down the error interval for y.

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