Daily Practice · Higher

Daily Practice - Higher

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

22nd August 2009

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

1
Probability Trees3 marks
2 of 5 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 21, median 26, upper quartile 33 and maximum 37. Work out the interquartile range.
3
Reverse Percentages3 marks
A bill is £744 including VAT at 20%. Work out the amount before VAT.
4
Equation of a Line3 marks
A line has gradient 3 and passes through (3, 12). Work out its equation.
5
Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 3, y = 54. Work out y when x = 4.

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