Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
28th November 2021
- 1Vectors Proof Questions3 marks
In a vector proof you find that vector PQ = 4a + 5b and vector RS = 20a + 25b. What does this show about PQ and RS?
- 2Probability Equation Questions3 marks
The probability of winning a game is 3/5. A player expects 66 wins. How many games did they play?
- 3Histograms2 marks
On a histogram, a 4-wide bar and a 12-wide bar have the same frequency density of 1.5. How many more values are in the wider class?
- 4Bounds3 marks
x = 142 and y = 59, each correct to the nearest whole number. Work out the upper bound of x - y.
- 5Proof3 marks
Prove that the sum of 7 consecutive integers is always a multiple of 7. State the simplified sum you would use.
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