Daily Practice

Foundation

18th March 1975

5 questions · 11 marks · Grades 3-4 · 87 question types in this band

1
Probability (Higher)3 marks
A biased coin lands on heads with probability 0.2. It is thrown 100 times. How many heads would you expect?
2
Averages from Frequency Tables3 marks
In a survey 8 households own 1 car, 2 own 2 cars and 3 own 3 cars. Work out the mean number of cars, to 2 decimal places.
3
Error Intervals2 marks
A number y is 21 when truncated to the nearest whole number. Write down the error interval for y.
4
Substitution2 marks
Work out the value of 2x + 7 when x = 5.
5
Writing and Simplifying Ratio1 mark
Write the ratio 32 : 72 in its simplest form.

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