Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
20th July 2015
- 1Repeated Percentage Change3 marks
A price rises by 25% and then falls by 10%. Work out the overall percentage change, to 2 decimal places.
- 2Perpendicular Lines and the equation of a tangent2 marks
A line has gradient 2. Work out the gradient of a line perpendicular to it.
- 3Conditional Probability3 marks
26 students study Spanish and 9 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
- 4Cumulative Frequency2 marks
A cumulative frequency graph is drawn for 184 values. What cumulative frequency do you read across from to estimate the lower quartile?
- 5Fractional and Negative Indices3 marks
Work out 125^(2/3).
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