Daily Practice

Higher Plus

4th December 1980

5 questions · 14 marks · Grades 8-9 · 51 question types in this band

1
Probability Equation Questions3 marks
A bag holds 3 red and n blue counters. The probability of taking a red is 3/11. Work out n.
2
Histograms3 marks
On a histogram the bar for 60 < x <= 80 has a frequency density of 0.4. How many values are in that class?
3
Surds3 marks
Simplify sqrt(45) + sqrt(80), giving your answer in the form a sqrt(b).
4
Algebraic Fractions3 marks
Simplify (x^2 + x - 30)/(x + 6).
5
Velocity Time Graphs2 marks
A train slows steadily from 29 m/s to rest in 10 seconds. Work out its deceleration.

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