Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
10th December 2003
- 1Conditional Probability3 marks
17 students study Spanish and 8 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
- 2Cumulative Frequency2 marks
Four classes in order have frequencies 12, 7, 12, 5. Write down the cumulative frequency at the end of the third class.
- 3Surds2 marks
Write sqrt(8) in the form a sqrt(b), where b is as small as possible.
- 4Solving Quadratics3 marks
Solve x^2 + 7x - 18 = 0.
- 5Speed and Density2 marks
A block has volume 75 cm^3 and density 2.5 g/cm^3. Work out its mass.
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