Daily Practice · Higher

Daily Practice - Higher

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

9th February 2006

5 questions · 13 marks · Grades 6-7 · 61 question types in this band

1
Conditional Probability3 marks
12 students study Spanish and 6 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
2
Histograms2 marks
A histogram class is 20 units wide and contains 10 values. Work out the frequency density.
3
Surds2 marks
Write sqrt(27) in the form a sqrt(b), where b is as small as possible.
4
Quadratic Formula3 marks
Use the quadratic formula to solve 2x^2 - 10x - 1 = 0, to 2 decimal places.
5
Repeated Percentage Change3 marks
A town's population is 14500 and grows by 4% each year. Work out the population after 2 years, to the nearest whole number.

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