Daily Practice · Foundation Plus

Daily Practice - Foundation Plus

22nd August 1996

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

1
Best Buy Questions3 marks
A pack of 8 pencils costs £2.40. A pack of 32 costs £8.32. Which pack is better value?
2
Vectors2 marks
a is the column vector (6, 6) and b is (7, -8). 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
160 people were surveyed. 90 were adults, of whom 45 said yes. 25 of the children said yes. How many said yes altogether?
5
Error Intervals2 marks
A number y is 32 when truncated to the nearest whole number. Write down the error interval for y.

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