Daily Practice · Higher

Daily Practice - Higher

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

13th May 2010

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

1
Probability Trees3 marks
1 of 9 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 80 values. Work out the frequency density.
3
Reverse Percentages3 marks
A bill is £384 including VAT at 20%. Work out the amount before VAT.
4
Factorising Harder Quadratics3 marks
Factorise 12x^2 - 35x + 25.
5
Repeated Percentage Change3 marks
A town's population is 37000 and grows by 4% each year. Work out the population after 5 years, to the nearest whole number.

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