Daily Practice - Foundation Plus
Grades 4-6 - the Foundation / Higher crossover zone.
- 1Ratio2 marks
Red and blue marbles are in the ratio 3 : 8. There are 21 red marbles. How many marbles are there altogether?
- 2Vectors2 marks
a is the column vector (0, -3) and b is (-1, -8). Work out a + b as a column vector.
- 3Probability Trees3 marks
4 of 8 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, 11, 5, 9. Write down the cumulative frequency at the end of the third class.
- 5Error Intervals2 marks
A number y is 78 when truncated to the nearest whole number. Write down the error interval for y.
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Recent Foundation Plus sheets
Every sheet is deterministic: the same date always regenerates the same five questions. All of May 2013, including the monthly compilation PDF.