Daily Practice · Higher

Daily Practice - Higher

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

7th January 2013

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

1
Repeated Percentage Change3 marks
A price rises by 10% and then falls by 25%. Work out the overall percentage change, to 2 decimal places.
2
Sector Areas and Arc Lengths3 marks
A sector of a circle has radius 9 cm and angle 30°. Work out its area, to 1 decimal place.
3
Conditional Probability3 marks
23 students study Spanish and 9 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
4
Cumulative Frequency2 marks
A cumulative frequency graph is drawn for 232 values. What cumulative frequency do you read across from to estimate the lower quartile?
5
Fractional and Negative Indices3 marks
Work out 27^(2/3).

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