Daily Practice · Higher

Daily Practice - Higher

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

7th October 2013

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

1
Cumulative Frequency2 marks
A cumulative frequency graph is drawn for 200 values. What cumulative frequency do you read across from to estimate the lower quartile?
2
Reverse Percentages3 marks
A bill is £864 including VAT at 20%. Work out the amount before VAT.
3
Parallel and Perpendicular Lines3 marks
A line has equation y = -3x + 1. Work out the gradient of any line perpendicular to it.
4
Repeated Percentage Change3 marks
A price rises by 20% and then falls by 10%. Work out the overall percentage change, to 2 decimal places.
5
Enlarging with Negative Scale Factors3 marks
The point (-3, 6) is enlarged by scale factor -1 about the centre (2, -3). Write down the coordinates of the image.

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