Daily Practice · Higher

Daily Practice - Higher

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

6th March 2007

5 questions · 14 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
60 newts are marked and released. Later 24 are caught, of which 4 are marked. Estimate the population.
3
Fractional and Negative Indices3 marks
Work out 49^(3/2).
4
Simultaneous Equations3 marks
5 teas and 1 cake cost £9.00. 3 teas and 4 cakes cost £15.60. 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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