Daily Practice · Foundation Plus

Daily Practice - Foundation Plus

1st May 1997

5 questions · 13 marks · Grades 4-6 · 128 question types in this band

1
Best Buy Questions3 marks
A pack of 8 pencils costs £1.60. A pack of 24 costs £4.08. Which pack is better value?
2
Vectors2 marks
a is the column vector (-6, 1) and b is (4, -4). Work out a + b as a column vector.
3
Probability Trees3 marks
6 of 10 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Capture Recapture3 marks
15 fish are marked and released. Later 28 are caught, of which 4 are marked. Estimate the population.
5
Error Intervals2 marks
A number y is 46 when truncated to the nearest whole number. Write down the error interval for y.

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