Daily Practice - Foundation Plus
Grades 4-6 - the Foundation / Higher crossover zone.
25th June 2014
- 1Percentages2 marks
Work out 60% of 40.
- 2Vectors2 marks
a is the column vector (3, 7) and b is (-1, 2). Work out a + b as a column vector.
- 3Probability Trees3 marks
7 of 9 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 8, 4, 6, 5. Write down the cumulative frequency at the end of the third class.
- 5Error Intervals2 marks
A number y is 46 when truncated to the nearest whole number. Write down the error interval for y.
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