Daily Practice · Higher

Daily Practice - Higher

Grades 6-7 - Higher-tier method and manipulation.

12th May 2011

5 questions · 14 marks · Grades 6-7 · 61 question types in this band

1
Repeated Percentage Change3 marks
A town's population is 17000 and grows by 3% each year. Work out the population after 4 years, to the nearest whole number.
2
Vectors3 marks
a is the column vector (-2, 3) and b is (-2, 5). Work out 3a - 3b as a column vector.
3
Probability Trees3 marks
3 of 10 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Histograms2 marks
A histogram class is 2 units wide and contains 4 values. Work out the frequency density.
5
Standard Form3 marks
Work out (72 x 10^8) / (8 x 10^4). Give your answer in standard form.

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