Daily Practice - Foundation Plus
Grades 4-6 - the Foundation / Higher crossover zone.
21st April 1999
- 1Percentages2 marks
Work out 60% of 300.
- 2Vectors2 marks
a is the column vector (-7, 8) and b is (-6, -3). Work out a + b as a column vector.
- 3Probability 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.
- 4Cumulative Frequency2 marks
Four classes in order have frequencies 3, 3, 8, 5. Write down the cumulative frequency at the end of the third class.
- 5Error Intervals2 marks
A number y is 64 when truncated to the nearest whole number. Write down the error interval for y.
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Every sheet is deterministic: the same date always regenerates the same five questions. All of April 1999, including the monthly compilation PDF.