Daily Practice

Foundation Plus

21st October 1971

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

1
Best Buy Questions3 marks
A pack of 7 pencils costs £4.20. A pack of 14 costs £8.12. Which pack is better value?
2
Vectors2 marks
a is the column vector (6, 4) and b is (-8, 5). Work out a + b as a column vector.
3
Probability Trees3 marks
5 of 8 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 6 and a maximum of 44. Work out the range.
5
Error Intervals2 marks
A number y is 13 when truncated to the nearest whole number. Write down the error interval for y.

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