Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
- 1Conditional Probability3 marks
29 students study Spanish and 12 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 4 units wide and contains 8 values. Work out the frequency density.
- 3Recurring Decimals to Fractions3 marks
Write the recurring decimal 0.777... as a fraction in its simplest form.
- 4Quadratic Formula3 marks
Work out the discriminant of 2x^2 - 4x + 7 = 0 and say how many real solutions it has.
- 5Repeated Percentage Change3 marks
A town's population is 11000 and grows by 8% each year. Work out the population after 6 years, to the nearest whole number.
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