Daily Practice · Higher

Daily Practice - Higher

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

13th March 2017

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

1
Probability Trees3 marks
4 of 9 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 124 values. What cumulative frequency do you read across from to estimate the lower quartile?
3
Standard Form2 marks
Work out (9 x 10^3) x (7 x 10^-5). Give your answer in standard form.
4
Factorising Harder Quadratics3 marks
Factorise 6x^2 + 5x - 25.
5
Repeated Percentage Change3 marks
A price rises by 15% and then falls by 20%. Work out the overall percentage change, to 2 decimal places.

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