Daily Practice · Foundation Plus

Daily Practice - Foundation Plus

Grades 4-6 - the Foundation / Higher crossover zone.

21st June 2001

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

1
Best Buy Questions3 marks
A pack of 11 teabags costs £2.75. A pack of 44 costs £9.24. Which pack is better value?
2
Vectors2 marks
a is the column vector (7, 1) and b is (-3, -1). Work out a + b as a column vector.
3
Probability Trees3 marks
1 of 6 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Cumulative Frequency2 marks
Four classes in order have frequencies 11, 4, 9, 4. Write down the cumulative frequency at the end of the third class.
5
Error Intervals2 marks
A number y is 4 when truncated to the nearest whole number. Write down the error interval for y.

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