Daily Practice · Higher

Daily Practice - Higher

Grades 6-7 - Higher-tier method and manipulation.

6th January 2017

5 questions · 13 marks · Grades 6-7 · 61 question types in this band

1
Conditional Probability3 marks
21 students study Spanish and 3 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
2
Capture Recapture2 marks
A capture-recapture estimate is made of the snail population of a hedgerow. State one assumption the method relies on.
3
Standard Form2 marks
Work out (2 x 10^3) x (6 x 10^5). Give your answer in standard form.
4
Quadratic Formula3 marks
Work out the discriminant of 4x^2 - x + 12 = 0 and say how many real solutions it has.
5
Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 5, y = 40. Work out y when x = 4.

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