Daily Practice

Foundation Plus

22nd December 1966

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

1
Best Buy Questions3 marks
A pack of 6 teabags costs £3.60. A pack of 12 costs £6.60. Which pack is better value?
2
Vectors2 marks
a is the column vector (2, -8) and b is (-6, 5). Work out a + b as a column vector.
3
Probability Trees3 marks
5 of 9 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Capture Recapture3 marks
30 beetles are marked and released. Later 40 are caught, of which 5 are marked. Estimate the population.
5
Error Intervals2 marks
A number y is 39 when truncated to the nearest whole number. Write down the error interval for y.

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Any date always gives the same five questions, so a sheet can be set again or shared. All of December 1966, including the monthly compilation PDF.