Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
25th July 2012
- 1Probability 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.
- 2Cumulative Frequency2 marks
Four classes in order have frequencies 7, 9, 8, 7. Write down the cumulative frequency at the end of the third class.
- 3Standard Form3 marks
Work out (12 x 10^10) / (3 x 10^4). Give your answer in standard form.
- 4Simultaneous Equations3 marks
4 teas and 1 cake cost £7.95. 4 teas and 5 cakes cost £16.55. Find the price of a tea.
- 5Speed and Density2 marks
A block has volume 80 cm^3 and density 8 g/cm^3. Work out its mass.
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