Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
8th March 2021
- 1Repeated Percentage Change3 marks
A price rises by 15% and then falls by 20%. Work out the overall percentage change, to 2 decimal places.
- 2Spheres and Cones3 marks
A sphere has radius 3 cm. Work out its volume, leaving your answer in terms of pi.
- 3Probability Trees3 marks
2 of 7 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 4Cumulative Frequency2 marks
A cumulative frequency graph is drawn for 84 values. What cumulative frequency do you read across from to estimate the lower quartile?
- 5The Product Rule for Counting2 marks
A meal deal has 7 mains, 4 sides and 4 drinks. How many different meals are possible?
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