Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
19th October 2006
- 1Conditional Probability3 marks
16 students study Spanish and 3 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 10 units wide and contains 5 values. Work out the frequency density.
- 3Recurring Decimals to Fractions3 marks
Write the recurring decimal 0.222... as a fraction in its simplest form.
- 4Drawing Quadratic Graphs2 marks
For the curve y = x^2 - 7x + 10, work out y when x = -2.
- 5Repeated Percentage Change3 marks
A town's population is 13500 and grows by 6% each year. Work out the population after 2 years, to the nearest whole number.
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