Daily Practice · Higher

Daily Practice - Higher

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

8th September 2007

5 questions · 14 marks · Grades 6-7 · 61 question types in this band

1
Conditional Probability3 marks
10 students study Spanish and 5 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 16, median 26, upper quartile 28 and maximum 38. Work out the interquartile range.
3
Standard Form3 marks
Work out (28 x 10^10) / (7 x 10^4). Give your answer in standard form.
4
Quadratic Formula3 marks
Work out the discriminant of 2x^2 - 3x + 12 = 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 = 32. Work out y when x = 8.

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