Daily Practice · Higher

Daily Practice - Higher

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

10th December 2011

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

1
Probability Trees3 marks
3 of 7 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 19, median 22, upper quartile 32 and maximum 42. Work out the interquartile range.
3
Fractional and Negative Indices2 marks
Write 6^-2 as a fraction.
4
Factorising Harder Quadratics3 marks
Factorise 8x^2 + 14x + 5.
5
Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 4, y = 64. Work out y when x = 8.

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