Daily Practice

Foundation Plus

14th December 1988

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

1
Percentages2 marks
Work out 30% of 220.
2
Vectors2 marks
a is the column vector (6, 7) and b is (1, -1). Work out a + b as a column vector.
3
Probability Trees3 marks
7 of 9 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Averages from Frequency Tables3 marks
In a survey 4 households own 1 car, 3 own 2 cars and 5 own 3 cars. Work out the mean number of cars, to 2 decimal places.
5
Error Intervals2 marks
A number y is 40 when truncated to the nearest whole number. Write down the error interval for y.

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