Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
12th March 2015
- 1Probability Trees3 marks
1 of 6 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 2Histograms2 marks
A histogram class is 10 units wide and contains 30 values. Work out the frequency density.
- 3Fractional and Negative Indices2 marks
Write 5^-2 as a fraction.
- 4Simultaneous Equations3 marks
5 teas and 2 cakes cost £18.20. 2 teas and 4 cakes cost £18.00. Find the price of a tea.
- 5Repeated Percentage Change3 marks
A town's population is 11000 and grows by 4% each year. Work out the population after 5 years, to the nearest whole number.
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