Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
- 1Conditional Probability3 marks
21 students study Spanish and 4 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
- 2Box Plots2 marks
A box plot has minimum 14, lower quartile 24, median 32, upper quartile 36 and maximum 46. Work out the interquartile range.
- 3Surds2 marks
Write sqrt(72) in the form a sqrt(b), where b is as small as possible.
- 4Solving Quadratics3 marks
Solve x^2 - 4x - 12 = 0.
- 5Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 2, y = 24. Work out y when x = 6.
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