Daily Practice

Foundation Plus

14th April 1966

5 questions · 13 marks · Grades 4-6 · 128 question types in this band

1
Best Buy Questions3 marks
A pack of 11 batteries costs £3.85. A pack of 44 costs £14.96. Which pack is better value?
2
Vectors2 marks
a is the column vector (-1, 5) and b is (0, -1). Work out a + b as a column vector.
3
Probability Trees3 marks
1 of 5 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Frequency Trees3 marks
210 people were surveyed. 50 were adults, of whom 25 said yes. 80 of the children said yes. How many said yes altogether?
5
Error Intervals2 marks
A number y is 36 when truncated to the nearest whole number. Write down the error interval for y.

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