Daily Practice

Foundation

23rd April 1968

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 0.4. It is thrown 500 times. How many heads would you expect?
2
Frequency Trees3 marks
80 people were surveyed. 90 were adults, of whom 40 said yes. -5 of the children said yes. How many said yes altogether?
3
Error Intervals2 marks
A number y is 67 when truncated to the nearest whole number. Write down the error interval for y.
4
Substitution2 marks
Work out the value of 2x - 1 when x = 7.
5
Writing and Simplifying Ratio1 mark
Write the ratio 6 : 15 in its simplest form.

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