Daily Practice · Higher

Daily Practice - Higher

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

27th May 2011

5 questions · 14 marks · Grades 6-7 · 61 question types in this band

1
Capture Recapture2 marks
A capture-recapture estimate is made of the snail population of a hedgerow. State one assumption the method relies on.
2
Recurring Decimals to Fractions3 marks
Write the recurring decimal 0.8686... as a fraction in its simplest form.
3
Parallel and Perpendicular Lines3 marks
A line has equation y = -2x + 8. Work out the gradient of any line perpendicular to it.
4
Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 5, y = 55. Work out y when x = 8.
5
Enlarging with Negative Scale Factors3 marks
The point (-5, -4) is enlarged by scale factor -1 about the centre (3, -2). Write down the coordinates of the image.

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