Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
28th December 2020
- 1Conditional Probability3 marks
25 students study Spanish and 8 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 172 values. What cumulative frequency do you read across from to estimate the lower quartile?
- 3Standard Form2 marks
Work out (4 x 10^7) x (2 x 10^-2). Give your answer in standard form.
- 4Drawing Quadratic Graphs2 marks
For the curve y = x^2 - 3x - 10, work out y when x = 5.
- 5Repeated Percentage Change3 marks
A price rises by 20% and then falls by 10%. Work out the overall percentage change, to 2 decimal places.
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