Daily Practice

Foundation Plus

14th May 1974

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

1
Writing and Simplifying Ratio2 marks
Write the ratio 5 : 15 in the form 1 : n.
2
Vectors2 marks
a is the column vector (7, 8) and b is (-7, -2). Work out a + b as a column vector.
3
Probability Trees3 marks
7 of 10 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Cumulative Frequency2 marks
Four classes in order have frequencies 7, 4, 5, 9. Write down the cumulative frequency at the end of the third class.
5
Error Intervals2 marks
A number y is 89 when truncated to the nearest whole number. Write down the error interval for y.

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