Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
29th December 2021
- 1Probability Equation Questions3 marks
A bag holds 6 red and n blue counters. The probability of taking a red is 2/3. Work out n.
- 2Histograms3 marks
On a histogram the bar for 30 < x <= 40 has a frequency density of 3.5. How many values are in that class?
- 3Bounds3 marks
A rectangle is 9 cm by 30 cm, each correct to the nearest cm. Work out the upper bound of its area.
- 4Proof2 marks
In an algebraic proof, how would you write the next even number after 2n in terms of an integer n?
- 5Velocity Time Graphs2 marks
A train slows steadily from 35 m/s to rest in 5 seconds. Work out its deceleration.
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