Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
4th October 2018
- 1Conditional Probability3 marks
17 students study Spanish and 4 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 5 units wide and contains 15 values. Work out the frequency density.
- 3Surds2 marks
Write sqrt(27) in the form a sqrt(b), where b is as small as possible.
- 4Drawing Quadratic Graphs2 marks
For the curve y = x^2 + 7x + 2, work out y when x = 5.
- 5Repeated Percentage Change3 marks
A town's population is 14500 and grows by 5% each year. Work out the population after 5 years, to the nearest whole number.
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