Daily Practice · Foundation Plus

Daily Practice - Foundation Plus

22nd May 1993

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

1
Ratio2 marks
Red and blue marbles are in the ratio 2 : 9. There are 28 red marbles. How many marbles are there altogether?
2
Vectors2 marks
a is the column vector (-6, -3) and b is (1, 2). Work out a + b as a column vector.
3
Probability Trees3 marks
6 of 9 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Frequency Trees3 marks
110 people were surveyed. 70 were adults, of whom 25 said yes. 20 of the children said yes. How many said yes altogether?
5
Error Intervals2 marks
A number y is 69 when truncated to the nearest whole number. Write down the error interval for y.

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