Daily Practice · Higher

Daily Practice - Higher

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

23rd December 2013

5 questions · 14 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
Cumulative Frequency2 marks
A cumulative frequency graph is drawn for 40 values. What cumulative frequency do you read across from to estimate the lower quartile?
3
Reverse Percentages3 marks
A bill is £912 including VAT at 20%. Work out the amount before VAT.
4
Equation of a Line3 marks
A line has gradient -1 and passes through (2, 2). Work out its equation.
5
Repeated Percentage Change3 marks
A price rises by 20% and then falls by 25%. Work out the overall percentage change, to 2 decimal places.

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