Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
12th June 2021
- 1Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 3, y = 81. Work out y when x = 4.
- 2Spheres and Cones3 marks
A sphere has radius 15 cm. Work out its volume, leaving your answer in terms of pi.
- 3Probability 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.
- 4Box Plots2 marks
A box plot has minimum 11, lower quartile 19, median 21, upper quartile 23 and maximum 31. Work out the interquartile range.
- 5Reverse Percentages3 marks
A bill is £216 including VAT at 20%. Work out the amount before VAT.
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