Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
10th December 2013
- 1Vectors Proof Questions3 marks
In a vector proof you find that vector PQ = 4a - 6b and vector RS = 20a - 30b. What does this show about PQ and RS?
- 2Probability Equation Questions3 marks
The probability of winning a game is 1/2. A player expects 8 wins. How many games did they play?
- 3Histograms3 marks
A histogram has two bars: one 10 units wide with frequency density 1.5, one 5 units wide with density 0.6. How many values in total?
- 4Surds3 marks
Expand and simplify (6 + sqrt(5))(6 - sqrt(5)).
- 5Proof2 marks
In an algebraic proof, how would you write the next odd number after 2n + 1 in terms of an integer n?
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