Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
5th December 2011
- 1Cumulative Frequency2 marks
A cumulative frequency graph is drawn for 156 values. What cumulative frequency do you read across from to estimate the lower quartile?
- 2Standard Form2 marks
Work out (5 x 10^4) x (7 x 10^3). Give your answer in standard form.
- 3Parallel and Perpendicular Lines3 marks
A line has equation y = 2x + 4. Work out the gradient of any line perpendicular to it.
- 4Repeated Percentage Change3 marks
A price rises by 10% and then falls by 20%. Work out the overall percentage change, to 2 decimal places.
- 5Enlarging with Negative Scale Factors3 marks
The point (6, -4) is enlarged by scale factor -3 about the centre (4, 3). Write down the coordinates of the image.
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