Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
- 1Conditional Probability3 marks
30 students study Spanish and 11 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 12, lower quartile 14, median 22, upper quartile 25 and maximum 32. Work out the interquartile range.
- 3Bounds2 marks
A mass is 16.9 kg, correct to 1 decimal place. Write down the lower bound.
- 4Quadratic Formula3 marks
Use the quadratic formula to solve x^2 + 11x + 4 = 0, to 2 decimal places.
- 5Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 3, y = 81. Work out y when x = 2.
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