Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
12th October 2014
- 13d Pythagoras and Trigonometry3 marks
A cuboid measures 12 cm by 3 cm by 8 cm. Work out the length of the longest diagonal inside it, to 1 decimal place.
- 2Probability Equation Questions3 marks
A bag holds 3 red and n blue counters. The probability of taking a red is 1/3. Work out n.
- 3Histograms2 marks
On a histogram, a 5-wide bar and a 20-wide bar have the same frequency density of 3. How many more values are in the wider class?
- 4Bounds3 marks
x = 55 and y = 35, each correct to the nearest whole number. Work out the upper bound of x - y.
- 5Proof2 marks
In an algebraic proof, how would you write a multiple of 4 in terms of an integer n?
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