Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
2nd November 2017
- 1Conditional Probability3 marks
12 students study Spanish and 5 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.
- 3Fractional and Negative Indices3 marks
Work out 8^(2/3).
- 4Drawing Quadratic Graphs2 marks
For the curve y = x^2 + 7x + 1, work out y when x = -2.
- 5Repeated Percentage Change3 marks
A town's population is 31000 and grows by 8% each year. Work out the population after 2 years, to the nearest whole number.
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