Daily Practice

Foundation Plus

15th November 1973

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

1
Best Buy Questions3 marks
A pack of 11 pencils costs £3.85. A pack of 44 costs £13.20. Which pack is better value?
2
Vectors2 marks
a is the column vector (5, 8) and b is (2, -3). Work out a + b as a column vector.
3
Probability Trees3 marks
5 of 7 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. 30 were adults, of whom 5 said yes. 20 of the children said yes. How many said yes altogether?
5
Error Intervals2 marks
A number y is 8 when truncated to the nearest whole number. Write down the error interval for y.

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