Daily Practice

Foundation Plus

24th September 1983

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

1
Ratio2 marks
Red and blue marbles are in the ratio 5 : 6. There are 30 red marbles. How many marbles are there altogether?
2
Vectors2 marks
a is the column vector (6, -1) and b is (5, 8). Work out a + b as a column vector.
3
Probability Trees3 marks
2 of 6 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Box Plots2 marks
A box plot has a minimum of 14 and a maximum of 34. Work out the range.
5
Error Intervals2 marks
A number y is 7 when truncated to the nearest whole number. Write down the error interval for y.

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