Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
18th July 2012
- 1Vectors Proof Questions3 marks
In a vector proof you find that vector PQ = 3a - 5b and vector RS = 12a - 20b. What does this show about PQ and RS?
- 2Probability Equation Questions3 marks
The probability of winning a game is 4/5. A player expects 16 wins. How many games did they play?
- 3Histograms2 marks
On a histogram, a 5-wide bar and a 20-wide bar have the same frequency density of 1.5. How many more values are in the wider class?
- 4Bounds3 marks
A rectangle is 16 cm by 29 cm, each correct to the nearest cm. Work out the upper bound of its area.
- 5Proof2 marks
In an algebraic proof, how would you write the square of an odd number in terms of an integer n?
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