Daily Practice

Foundation Plus

15th January 1983

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

1
Ratio2 marks
Red and blue sweets are in the ratio 5 : 7. There are 60 red sweets. How many sweets are there altogether?
2
Vectors2 marks
a is the column vector (3, -3) and b is (-4, 7). Work out a + b as a column vector.
3
Probability Trees3 marks
7 of 9 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 5, 5, 3, 4. Write down the cumulative frequency at the end of the third class.
5
Error Intervals2 marks
A number y is 47 when truncated to the nearest whole number. Write down the error interval for y.

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