Daily Practice

Foundation Plus

15th September 1971

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

1
Percentages2 marks
Work out 75% of 240.
2
Vectors2 marks
a is the column vector (8, -6) and b is (-8, 0). Work out a + b as a column vector.
3
Probability Trees3 marks
2 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
170 people were surveyed. 90 were adults, of whom 40 said yes. 20 of the children said yes. How many said yes altogether?
5
Error Intervals2 marks
A number y is 33 when truncated to the nearest whole number. Write down the error interval for y.

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