Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
20th September 2000
- 1Conditional Probability3 marks
22 students study Spanish and 11 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 4, 5, 9, 10. Write down the cumulative frequency at the end of the third class.
- 3Bounds2 marks
A mass is 6.6 kg, correct to 1 decimal place. Write down the upper bound.
- 4Quadratic Formula3 marks
Use the quadratic formula to solve 2x^2 - 9x - 1 = 0, to 2 decimal places.
- 5Speed and Density2 marks
A block has volume 190 cm^3 and density 2.5 g/cm^3. Work out its mass.
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