Daily Practice · Higher

Daily Practice - Higher

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

15th February 2009

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

1
Direct and Inverse Proportion3 marks
y is inversely proportional to x. When x = 7, y = 8. Work out y when x = 2.
2
Vectors3 marks
a is the column vector (-2, -1) and b is (3, 5). Work out 3a - 4b as a column vector.
3
Probability Trees3 marks
2 of 8 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Box Plots2 marks
A box plot has a minimum of 17 and a maximum of 28. Work out the range.
5
Standard Form2 marks
Work out (9 x 10^5) x (7 x 10^3). Give your answer in standard form.

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