Daily Practice · Higher

Daily Practice - Higher

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

25th June 2011

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

1
Probability Trees3 marks
2 of 10 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 14, lower quartile 19, median 21, upper quartile 29 and maximum 39. Work out the interquartile range.
3
Standard Form3 marks
Work out (10 x 10^7) / (2 x 10^5). Give your answer in standard form.
4
Equation of a Line3 marks
A line has gradient 2 and passes through (1, 9). Work out its equation.
5
Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 5, y = 125. Work out y when x = 9.

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