Daily Practice · Higher

Daily Practice - Higher

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

11th October 2011

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

1
Probability Trees3 marks
1 of 7 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
2
Capture Recapture3 marks
55 beetles are marked and released. Later 60 are caught, of which 5 are marked. Estimate the population.
3
Standard Form2 marks
Work out (7 x 10^7) x (8 x 10^-4). Give your answer in standard form.
4
Simultaneous Equations3 marks
2 teas and 2 cakes cost £8.70. 4 teas and 5 cakes cost £20.80. Find the price of a tea.
5
Writing a Ratio as a Fraction or Linear Function2 marks
x : y = 7 : 9. Write y in terms of x.

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