Daily Practice - Foundation Plus
Grades 4-6 - the Foundation / Higher crossover zone.
27th October 2004
- 1Percentages2 marks
Work out 10% of 380.
- 2Vectors2 marks
a is the column vector (3, 1) and b is (-6, -6). Work out a + b as a column vector.
- 3Probability Trees3 marks
3 of 7 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 4Averages from Frequency Tables2 marks
Grouped data has five classes of width 10, the first being 20 < x <= 30. The frequencies in order are 11, 3, 7, 21, 16. Write down the modal class.
- 5Error Intervals2 marks
A number y is 17 when truncated to the nearest whole number. Write down the error interval for y.
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