Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
5th December 2007
- 1Speed and Density2 marks
A block has volume 170 cm^3 and density 4 g/cm^3. Work out its mass.
- 2Perpendicular Lines and the equation of a tangent2 marks
A line has gradient -5. Work out the gradient of a line perpendicular to it.
- 3Conditional Probability3 marks
25 students study Spanish and 5 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
- 4Cumulative Frequency2 marks
Four classes in order have frequencies 6, 7, 3, 6. Write down the cumulative frequency at the end of the third class.
- 5Standard Form3 marks
Work out (10 x 10^12) / (2 x 10^2). Give your answer in standard form.
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