Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
5th August 2020
- 1Vectors Proof Questions3 marks
In a vector proof you find that vector PQ = 5a + 2b and vector RS = 20a + 8b. What does this show about PQ and RS?
- 2Probability Equation Questions3 marks
The probability of winning a game is 4/5. A player expects 12 wins. How many games did they play?
- 3Histograms2 marks
On a histogram, a 4-wide bar and a 16-wide bar have the same frequency density of 1.5. How many more values are in the wider class?
- 4Bounds3 marks
A rectangle is 22 cm by 12 cm, each correct to the nearest cm. Work out the upper bound of its area.
- 5Completing the Square3 marks
Write x^2 + 6x + 12 in the form (x + a)^2 + b.
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