Daily Practice · Higher

Daily Practice - Higher

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

13th February 2014

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

1
Repeated Percentage Change3 marks
A town's population is 5500 and grows by 5% each year. Work out the population after 6 years, to the nearest whole number.
2
Vectors3 marks
a is the column vector (-1, -1) and b is (2, -5). Work out 3a - 3b as a column vector.
3
Probability Trees3 marks
2 of 10 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Histograms2 marks
A histogram class is 4 units wide and contains 16 values. Work out the frequency density.
5
Surds2 marks
Write sqrt(20) in the form a sqrt(b), where b is as small as possible.

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