Daily Practice · Higher

Daily Practice - Higher

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

29th September 2011

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

1
Probability Trees3 marks
2 of 5 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
2
Histograms2 marks
A histogram class is 20 units wide and contains 30 values. Work out the frequency density.
3
Bounds2 marks
A mass is 13 kg, correct to 1 decimal place. Write down the lower bound.
4
Equation of a Line3 marks
A line has gradient -5 and passes through (4, -18). Work out its equation.
5
Repeated Percentage Change3 marks
A town's population is 29000 and grows by 4% each year. Work out the population after 3 years, to the nearest whole number.

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