Daily Practice

Foundation

19th October 1982

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 0.25. It is thrown 250 times. How many heads would you expect?
2
Averages from Frequency Tables3 marks
In a survey 2 households own 1 car, 6 own 2 cars and 2 own 3 cars. Work out the mean number of cars, to 2 decimal places.
3
Error Intervals2 marks
A number y is 71 when truncated to the nearest whole number. Write down the error interval for y.
4
Substitution2 marks
Work out the value of 6x - 7 when x = 2.
5
Scale Drawings2 marks
A map has a scale of 1 : 50000. Two villages are 4 cm apart on the map. How far apart are they in real life, in km?

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