Daily Practice · Higher

Daily Practice - Higher

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

29th April 2000

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

1
Conditional Probability3 marks
20 students study Spanish and 11 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
2
Box Plots2 marks
A box plot has minimum 13, lower quartile 18, median 23, upper quartile 28 and maximum 31. Work out the interquartile range.
3
Surds2 marks
Write sqrt(45) in the form a sqrt(b), where b is as small as possible.
4
Quadratic Formula3 marks
Work out the discriminant of 3x^2 - 3x + 4 = 0 and say how many real solutions it has.
5
Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 4, y = 48. Work out y when x = 8.

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