Daily Practice · Foundation Plus

Daily Practice - Foundation Plus

28th July 1994

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

1
Best Buy Questions3 marks
A pack of 5 pencils costs £2.25. A pack of 15 costs £5.85. Which pack is better value?
2
Vectors2 marks
a is the column vector (-3, -1) and b is (-2, -8). Work out a + b as a column vector.
3
Probability Trees3 marks
3 of 5 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Box Plots2 marks
A box plot has a minimum of 10 and a maximum of 21. Work out the range.
5
Error Intervals2 marks
A number y is 72 when truncated to the nearest whole number. Write down the error interval for y.

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