Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
19th December 2007
- 1Probability Trees3 marks
1 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, 4, 6, 8. Write down the cumulative frequency at the end of the third class.
- 3Fractional and Negative Indices2 marks
Write 3^-3 as a fraction.
- 4Simultaneous Equations3 marks
3 teas and 4 cakes cost £16.15. 4 teas and 5 cakes cost £20.50. Find the price of a tea.
- 5Speed and Density2 marks
A block has volume 115 cm^3 and density 8 g/cm^3. Work out its mass.
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