Daily Practice

Foundation Plus

19th February 1990

5 questions · 13 marks · Grades 4-6 · 128 question types in this band

1
Real Life and Distance Time Graphs3 marks
A coach travels 30 km in 0.5 hours, then 60 km in 1 hour. Work out the average speed for the whole journey, to 1 decimal place.
2
Vectors2 marks
a is the column vector (1, 8) and b is (3, 6). Work out a + b as a column vector.
3
Probability Trees3 marks
3 of 9 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Frequency Trees3 marks
150 people were surveyed. 50 were adults, of whom 25 said yes. 5 of the children said yes. How many said yes altogether?
5
Error Intervals2 marks
A number y is 51 when truncated to the nearest whole number. Write down the error interval for y.

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