Daily Practice

Foundation

22nd February 1983

5 questions · 12 marks · Grades 3-4 · 87 question types in this band

1
Probability (Higher)3 marks
A biased coin lands on heads with probability 0.15. It is thrown 100 times. How many heads would you expect?
2
Two Way Tables3 marks
In a group of 60 students, 20 are boys. 10 boys and 5 girls bring a packed lunch. How many students do not?
3
Error Intervals2 marks
A number y is 27 when truncated to the nearest whole number. Write down the error interval for y.
4
Substitution2 marks
Work out the value of 5x - 5 when x = 1.
5
Percentages2 marks
Work out 25% of 380.

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