Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
7th December 1999
- 1Conditional Probability3 marks
12 students study Spanish and 3 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
- 2Capture Recapture3 marks
10 voles are marked and released. Later 12 are caught, of which 4 are marked. Estimate the population.
- 3Recurring Decimals to Fractions3 marks
Write the recurring decimal 0.222... as a fraction in its simplest form.
- 4Quadratic Formula3 marks
Use the quadratic formula to solve x^2 + 6x - 3 = 0, to 2 decimal places.
- 5Writing a Ratio as a Fraction or Linear Function2 marks
x : y = 3 : 7. Write y in terms of x.
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