Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
21st August 2008
- 1Conditional Probability3 marks
15 students study Spanish and 9 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
- 2Histograms2 marks
A histogram class is 20 units wide and contains 40 values. Work out the frequency density.
- 3Surds2 marks
Write sqrt(8) in the form a sqrt(b), where b is as small as possible.
- 4Drawing Quadratic Graphs2 marks
For the curve y = x^2 + 6x - 2, work out y when x = 0.
- 5Repeated Percentage Change3 marks
A town's population is 29000 and grows by 3% each year. Work out the population after 4 years, to the nearest whole number.
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