Daily Practice · Higher

Daily Practice - Higher

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

8th January 2011

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

1
Probability Trees3 marks
3 of 6 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 8, lower quartile 16, median 18, upper quartile 26 and maximum 35. Work out the interquartile range.
3
Bounds2 marks
A mass is 36 kg, correct to the nearest whole number. Write down the upper bound.
4
Factorising Harder Quadratics3 marks
Factorise 4x^2 + 13x + 3.
5
Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 6, y = 288. Work out y when x = 9.

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