Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
21st August 2024
- 1Conditional Probability3 marks
15 students study Spanish and 4 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
- 2Cumulative Frequency2 marks
Four classes in order have frequencies 5, 4, 8, 5. Write down the cumulative frequency at the end of the third class.
- 3Reverse Percentages3 marks
A bill is £624 including VAT at 20%. Work out the amount before VAT.
- 4Quadratic Formula3 marks
Use the quadratic formula to solve 2x^2 + 5x - 11 = 0, to 2 decimal places.
- 5Speed and Density2 marks
A block has volume 160 cm^3 and density 4 g/cm^3. Work out its mass.
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