Daily Practice · Higher Plus

Daily Practice - Higher Plus

Grades 8-9 - exam-stretch algebra, geometry and reasoning.

24th January 2008

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

1
Conditional Probability3 marks
A bag holds 4 red, 6 blue and 2 green counters. Two are taken without replacement. Given neither is green, what is the probability both are red?
2
Histograms3 marks
On a histogram the bar for 60 < x <= 80 has a frequency density of 2.4. How many values are in that class?
3
Surds3 marks
Simplify sqrt(50) + sqrt(32), giving your answer in the form a sqrt(b).
4
Algebraic Fractions3 marks
Write 3/(x + 5) + 6/(x - 2) as a single fraction.
5
Velocity Time Graphs2 marks
A train slows steadily from 36 m/s to rest in 8 seconds. Work out its deceleration.

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