Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
14th October 1998
- 1Cumulative Frequency2 marks
Four classes in order have frequencies 11, 12, 6, 7. Write down the cumulative frequency at the end of the third class.
- 2The Product Rule for Counting3 marks
A code is 2 letters (A to Z) followed by 2 digits (0 to 9), and repeats are allowed. How many codes are possible?
- 3Parallel and Perpendicular Lines3 marks
A line has equation y = 5x + 3. Work out the gradient of any line perpendicular to it.
- 4Speed and Density2 marks
A block has volume 110 cm^3 and density 2.5 g/cm^3. Work out its mass.
- 5Enlarging with Negative Scale Factors3 marks
The point (5, 0) is enlarged by scale factor -3 about the centre (2, 4). Write down the coordinates of the image.
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