Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
8th October 2023
- 1Probability Equation Questions3 marks
A bag holds 6 counters, r of them red. Two are taken without replacement and P(both red) = 1/5. Work out r.
- 2Histograms3 marks
On a histogram the bar for 0 < x <= 20 has a frequency density of 1.5. How many values are in that class?
- 3Bounds3 marks
x = 147 and y = 131, each correct to the nearest whole number. Work out the upper bound of x - y.
- 4Iteration3 marks
Use the iteration x(n+1) = cube root of (5x(n) + 6) with x(0) = 5. Work out x(1) to 3 decimal places.
- 5Velocity Time Graphs2 marks
A train slows steadily from 37 m/s to rest in 10 seconds. Work out its deceleration.
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