Daily Practice · Higher

Daily Practice - Higher

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

12th March 2011

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

1
Expanding and Factorising Quadratics3 marks
Factorise x^2 + 17x + 72.
2
Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 5, y = 50. Work out y when x = 4.
3
The Sine Rule3 marks
In triangle ABC, angle A is 60°, angle B is 61° and side a is 19 cm. Use the sine rule to work out side b, to 1 decimal place.
4
Venn Diagrams3 marks
In a Venn diagram, 9 are in A only, 16 in B only, 9 in both and 9 in neither. Work out the probability a random one is in both.
5
Box Plots2 marks
A box plot has minimum 9, lower quartile 19, median 29, upper quartile 35 and maximum 37. Work out the interquartile range.

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