Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
1st March 2017
- 1Probability Trees3 marks
2 of 6 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 2Cumulative Frequency2 marks
Four classes in order have frequencies 12, 7, 11, 8. Write down the cumulative frequency at the end of the third class.
- 3Bounds2 marks
A mass is 12.3 kg, correct to 1 decimal place. Write down the lower bound.
- 4Simultaneous Equations3 marks
5 teas and 4 cakes cost £19.15. 2 teas and 5 cakes cost £15.65. Find the price of a tea.
- 5Speed and Density2 marks
A block has volume 80 cm^3 and density 4 g/cm^3. Work out its mass.
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