Daily Practice

Foundation Plus

30th January 1987

5 questions · 11 marks · Grades 4-6 · 128 question types in this band

1
Scale Drawings2 marks
A map has a scale of 1 : 50000. Two villages are 10 cm apart on the map. How far apart are they in real life, in km?
2
Vectors2 marks
a is the column vector (4, 2) and b is (3, -4). Work out a + b as a column vector.
3
Probability Trees3 marks
6 of 9 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Box Plots2 marks
A box plot has minimum 15, lower quartile 23, median 29, upper quartile 31 and maximum 35. Work out the interquartile range.
5
Error Intervals2 marks
A number y is 70 when truncated to the nearest whole number. Write down the error interval for y.

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