Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
18th December 2017
- 1Repeated Percentage Change3 marks
A price rises by 15% and then falls by 10%. Work out the overall percentage change, to 2 decimal places.
- 2Finding the Area of Any Triangle3 marks
A triangle has sides of 10 cm and 5 cm with an angle of 87° between them. Work out its area, to 1 decimal place.
- 3Probability Trees3 marks
4 of 8 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 4Cumulative Frequency2 marks
A cumulative frequency graph is drawn for 232 values. What cumulative frequency do you read across from to estimate the lower quartile?
- 5Fractional and Negative Indices2 marks
Write 5^-1 as a fraction.
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