Daily Practice - Foundation Plus
Grades 4-6 - the Foundation / Higher crossover zone.
1st December 2018
- 1Ratio2 marks
Red and blue marbles are in the ratio 4 : 5. There are 32 red marbles. How many marbles are there altogether?
- 2Vectors2 marks
a is the column vector (2, 3) and b is (7, 8). Work out a + b as a column vector.
- 3Probability Trees3 marks
5 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 5, the first being 20 < x <= 25. The frequencies in order are 11, 3, 7, 21, 16. Write down the modal class.
- 5Error Intervals2 marks
A number y is 28 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 December 2018, including the monthly compilation PDF.