Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
- 1Probability Trees3 marks
2 of 5 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 2Box Plots2 marks
A box plot has minimum 8, lower quartile 13, median 19, upper quartile 23 and maximum 30. Work out the interquartile range.
- 3Standard Form2 marks
Work out (4 x 10^3) x (4 x 10^3). Give your answer in standard form.
- 4Simultaneous Equations3 marks
3 teas and 2 cakes cost £12.10. 2 teas and 4 cakes cost £15.40. Find the price of a tea.
- 5Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 4, y = 64. Work out y when x = 5.
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