Daily Practice

Foundation Plus

27th March 1990

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

1
Writing and Simplifying Ratio2 marks
Write the ratio 7 : 21 in the form 1 : n.
2
Vectors2 marks
a is the column vector (-2, -1) and b is (8, 3). Work out a + b as a column vector.
3
Probability Trees3 marks
3 of 8 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 19 and a maximum of 58. Work out the range.
5
Error Intervals2 marks
A number y is 4 when truncated to the nearest whole number. Write down the error interval for y.

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