Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
18th February 2016
- 1Histograms2 marks
A histogram class is 4 units wide and contains 12 values. Work out the frequency density.
- 2The Product Rule for Counting3 marks
A code is 3 letters (A to Z) followed by 3 digits (0 to 9), and repeats are allowed. How many codes are possible?
- 3Parallel and Perpendicular Lines3 marks
A line has equation y = -2x + 5. Work out the gradient of any line perpendicular to it.
- 4Repeated Percentage Change3 marks
A town's population is 7000 and grows by 6% each year. Work out the population after 3 years, to the nearest whole number.
- 5Enlarging with Negative Scale Factors3 marks
The point (-6, -6) is enlarged by scale factor -3 about the centre (-4, 2). Write down the coordinates of the image.
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Every sheet is deterministic: the same date always regenerates the same five questions. All of February 2016, including the monthly compilation PDF.