Daily Practice

Foundation Plus

19th August 1983

5 questions · 12 marks · Grades 4-6 · 128 question types in this band

1
Scale Drawings2 marks
A map has a scale of 1 : 25000. 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 (3, -6) and b is (-4, -3). Work out a + b as a column vector.
3
Probability Trees3 marks
4 of 8 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Frequency Trees3 marks
160 people were surveyed. 50 were adults, of whom 15 said yes. 10 of the children said yes. How many said yes altogether?
5
Error Intervals2 marks
A number y is 30 when truncated to the nearest whole number. Write down the error interval for y.

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