Daily Practice

Foundation Plus

18th January 1955

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

1
Writing and Simplifying Ratio2 marks
Write the ratio 2 : 18 in the form 1 : n.
2
Vectors2 marks
a is the column vector (4, -6) and b is (3, -5). Work out a + b as a column vector.
3
Probability Trees3 marks
1 of 8 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Capture Recapture3 marks
45 fish are marked and released. Later 72 are caught, of which 8 are marked. Estimate the population.
5
Error Intervals2 marks
A number y is 7 when truncated to the nearest whole number. Write down the error interval for y.

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