Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
- 1Repeated Percentage Change3 marks
A price rises by 10% and then falls by 10%. Work out the overall percentage change, to 2 decimal places.
- 2Similar Shapes (Area and Volume)3 marks
Two similar shapes have lengths in the ratio 1 : 3. The smaller has an area of 4 cm^2. Work out the area of the larger.
- 3Conditional Probability3 marks
30 students study Spanish and 10 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
- 4Cumulative Frequency2 marks
A cumulative frequency graph is drawn for 116 values. What cumulative frequency do you read across from to estimate the lower quartile?
- 5Surds2 marks
Write sqrt(20) in the form a sqrt(b), where b is as small as possible.
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