Daily Practice

Foundation Plus

7th June 1990

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

1
Best Buy Questions3 marks
A pack of 9 pencils costs £2.70. A pack of 18 costs £4.68. Which pack is better value?
2
Vectors2 marks
a is the column vector (2, 5) and b is (8, 3). Work out a + b as a column vector.
3
Probability Trees3 marks
4 of 9 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Scatter Graphs3 marks
A line of best fit on a scatter graph has equation y = 3x + 7. Use it to estimate y when x = 3.
5
Error Intervals2 marks
A number y is 88 when truncated to the nearest whole number. Write down the error interval for y.

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