Daily Practice · Foundation Plus

Daily Practice - Foundation Plus

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

1st October 2009

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

1
Best Buy Questions3 marks
A pack of 8 pencils costs £3.60. A pack of 16 costs £6.24. Which pack is better value?
2
Vectors2 marks
a is the column vector (6, 3) and b is (-2, 0). Work out a + b as a column vector.
3
Probability Trees3 marks
4 of 6 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 12 and a maximum of 40. Work out the range.
5
Error Intervals2 marks
A number y is 52 when truncated to the nearest whole number. Write down the error interval for y.

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