Daily Practice · Higher

Daily Practice - Higher

Grades 6-7 - Higher-tier method and manipulation.

23rd June 2015

5 questions · 13 marks · Grades 6-7 · 61 question types in this band

1
Capture Recapture3 marks
15 beetles are marked and released. Later 25 are caught, of which 5 are marked. Estimate the population.
2
Surds2 marks
Write sqrt(98) in the form a sqrt(b), where b is as small as possible.
3
Parallel and Perpendicular Lines3 marks
A line has equation y = -5x + 7. Work out the gradient of any line perpendicular to it.
4
Writing a Ratio as a Fraction or Linear Function2 marks
x : y = 3 : 5. Write y in terms of x.
5
Enlarging with Negative Scale Factors3 marks
The point (5, 5) is enlarged by scale factor -2 about the centre (3, -2). Write down the coordinates of the image.

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