Daily Practice · Higher

Daily Practice - Higher

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

22nd February 2007

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

1
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.
2
Histograms2 marks
A histogram class is 10 units wide and contains 40 values. Work out the frequency density.
3
Standard Form3 marks
Work out (72 x 10^12) / (8 x 10^5). Give your answer in standard form.
4
Equation of a Line3 marks
A line has gradient 3 and passes through (1, 2). Work out its equation.
5
Repeated Percentage Change3 marks
A town's population is 19000 and grows by 3% each year. Work out the population after 4 years, to the nearest whole number.

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