Daily Practice · Foundation Plus

Daily Practice - Foundation Plus

26th March 1997

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

1
Percentages2 marks
Work out 20% of 140.
2
Vectors2 marks
a is the column vector (0, -5) and b is (8, -2). Work out a + b as a column vector.
3
Probability Trees3 marks
2 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, 16, 21, 3, 7. Write down the modal class.
5
Error Intervals2 marks
A number y is 23 when truncated to the nearest whole number. Write down the error interval for y.

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