Daily Practice · Higher Plus

Daily Practice - Higher Plus

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

15th April 2008

5 questions · 15 marks · Grades 8-9 · 51 question types in this band

1
Direct and Inverse Proportion Depth3 marks
y is directly proportional to sqrt(x). When x = 9, y = 27. Work out y when x = 49.
2
Vectors Proof Questions3 marks
OACB is a parallelogram with vector OA = b and vector OB = c. M is the midpoint. Write vector OM in terms of b and c.
3
Probability Equation Questions3 marks
The probability of winning a game is 4/5. A player expects 96 wins. How many games did they play?
4
Histograms3 marks
A histogram has four 10-wide classes from 0, with frequency densities 1, 2, 0.5, 3. Which class contains the median?
5
Surds3 marks
Expand and simplify (8 + sqrt(10))(8 - sqrt(10)).

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