Daily Practice

Foundation Plus

18th September 1984

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

1
Writing and Simplifying Ratio2 marks
Write the ratio 8 : 56 in the form 1 : n.
2
Vectors2 marks
a is the column vector (7, 0) and b is (-1, 5). Work out a + b as a column vector.
3
Probability Trees3 marks
8 of 10 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Frequency Trees3 marks
150 people were surveyed. 60 were adults, of whom 20 said yes. 40 of the children said yes. How many said yes altogether?
5
Error Intervals2 marks
A number y is 74 when truncated to the nearest whole number. Write down the error interval for y.

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