Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
3rd January 2004
- 1Conditional Probability3 marks
13 students study Spanish and 5 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 4, lower quartile 11, median 13, upper quartile 15 and maximum 22. Work out the interquartile range.
- 3Standard Form2 marks
Work out (2 x 10^3) x (8 x 10^-4). Give your answer in standard form.
- 4Quadratic Formula3 marks
Use the quadratic formula to solve 2x^2 + 7x + 3 = 0, to 2 decimal places.
- 5Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 6, y = 144. Work out y when x = 4.
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