Daily Practice · Higher

Daily Practice - Higher

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

20th April 2012

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

1
Probability Trees3 marks
1 of 5 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
2
Capture Recapture2 marks
A capture-recapture estimate is made of the snail population of a hedgerow. State one assumption the method relies on.
3
Fractional and Negative Indices2 marks
Write 9^-3 as a fraction.
4
Simultaneous Equations3 marks
2 teas and 4 cakes cost £8.60. 4 teas and 2 cakes cost £8.20. Find the price of a tea.
5
Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 9, y = 99. Work out y when x = 10.

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