Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
- 1Probability Trees3 marks
4 of 6 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 4, lower quartile 8, median 15, upper quartile 19 and maximum 25. Work out the interquartile range.
- 3Bounds2 marks
A mass is 20.7 kg, correct to 1 decimal place. Write down the lower bound.
- 4Simultaneous Equations3 marks
2 teas and 3 cakes cost £12.45. 4 teas and 3 cakes cost £15.75. 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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