Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
- 1Conditional Probability3 marks
16 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 10, 4, 3, 10. Write down the cumulative frequency at the end of the third class.
- 3Standard Form3 marks
Work out (24 x 10^8) / (4 x 10^5). Give your answer in standard form.
- 4Quadratic Formula3 marks
Work out the discriminant of 2x^2 + 5x + 12 = 0 and say how many real solutions it has.
- 5Speed and Density2 marks
A block has volume 10 cm^3 and density 3 g/cm^3. Work out its mass.
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