Daily Practice · Higher

Daily Practice - Higher

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

10th November 2012

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

1
Probability Trees3 marks
2 of 8 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
2
Box Plots2 marks
A box plot has minimum 15, lower quartile 20, median 29, upper quartile 31 and maximum 39. Work out the interquartile range.
3
Standard Form2 marks
Work out (5 x 10^3) x (3 x 10^-5). Give your answer in standard form.
4
Factorising Harder Quadratics3 marks
Factorise 5x^2 + 9x - 18.
5
Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 5, y = 175. Work out y when x = 2.

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