Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
25th November 2024
- 1Conditional Probability3 marks
13 students study Spanish and 3 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
- 2Cumulative Frequency2 marks
A cumulative frequency graph is drawn for 124 values. What cumulative frequency do you read across from to estimate the lower quartile?
- 3Surds2 marks
Write sqrt(75) in the form a sqrt(b), where b is as small as possible.
- 4Quadratic Formula3 marks
Use the quadratic formula to solve x^2 - 3x - 9 = 0, to 2 decimal places.
- 5Repeated Percentage Change3 marks
A price rises by 20% and then falls by 25%. Work out the overall percentage change, to 2 decimal places.
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