Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
20th April 2011
- 1Probability Equation Questions3 marks
The probability of winning a game is 7/8. A player expects 42 wins. How many games did they play?
- 2Histograms3 marks
A histogram has four 20-wide classes from 0, with frequency densities 2, 0.5, 1, 3. Which class contains the median?
- 3Bounds3 marks
A rectangle is 4 cm by 25 cm, each correct to the nearest cm. Work out the upper bound of its area.
- 4The Nth Term of a Quadratic Sequence2 marks
A quadratic sequence starts 8, 20, 42, 74. Work out the second difference, and the coefficient of n^2.
- 5Direct and Inverse Proportion Depth3 marks
y is inversely proportional to x^2. When x = 3, y = 50. Work out y when x = 5.
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