Daily Practice

Foundation Plus

20th October 1978

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 9.5 cm apart on the map. How far apart are they in real life, in km?
2
Vectors2 marks
a is the column vector (3, 5) and b is (3, -8). Work out a + b as a column vector.
3
Probability Trees3 marks
3 of 6 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Averages from Frequency Tables2 marks
Grouped data has five classes of width 5, the first being 0 < x <= 5. The frequencies in order are 7, 21, 3, 16, 11. Write down the modal class.
5
Error Intervals2 marks
A number y is 38 when truncated to the nearest whole number. Write down the error interval for y.

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