Daily Practice

Foundation Plus

26th December 1979

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

1
Percentages2 marks
Work out 10% of 380.
2
Vectors2 marks
a is the column vector (8, 8) and b is (-7, 0). Work out a + b as a column vector.
3
Probability Trees3 marks
3 of 5 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Capture Recapture3 marks
25 newts are marked and released. Later 80 are caught, of which 8 are marked. Estimate the population.
5
Error Intervals2 marks
A number y is 30 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 1979, including the monthly compilation PDF.