Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
21st January 2010
- 1Bounds2 marks
A mass is 50 kg, correct to the nearest 10. Write down the upper bound.
- 2Factorising Harder Quadratics3 marks
Factorise 6x^2 + 7x - 3.
- 3Repeated Percentage Change3 marks
A town's population is 29000 and grows by 3% each year. Work out the population after 3 years, to the nearest whole number.
- 4Spheres and Cones3 marks
A sphere has radius 3 cm. Work out its volume, leaving your answer in terms of pi.
- 5Probability Trees3 marks
3 of 10 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
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