Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
28th February 2015
- 1Probability Equation Questions3 marks
The probability of winning a game is 7/8. A player expects 63 wins. How many games did they play?
- 2Histograms3 marks
On a histogram the bar for 20 < x <= 40 has a frequency density of 2.4. How many values are in that class?
- 3Bounds3 marks
A car covers 780 m (to the nearest 10 m) in 8 s (to the nearest second). Work out the lower bound of its speed, to 2 decimal places.
- 4Proof3 marks
Prove that the sum of 7 consecutive integers is always a multiple of 7. State the simplified sum you would use.
- 5Velocity Time Graphs2 marks
A train slows steadily from 32 m/s to rest in 10 seconds. Work out its deceleration.
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