Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
7th September 2020
- 1Surds2 marks
Write sqrt(50) in the form a sqrt(b), where b is as small as possible.
- 2Drawing Quadratic Graphs2 marks
For the curve y = x^2 + 8x + 2, work out y when x = 4.
- 3Repeated Percentage Change3 marks
A price rises by 15% and then falls by 25%. Work out the overall percentage change, to 2 decimal places.
- 4Sector Areas and Arc Lengths3 marks
A sector of a circle has radius 13 cm and angle 120°. Work out its area, to 1 decimal place.
- 5Conditional Probability3 marks
13 students study Spanish and 8 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
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