Daily Practice - Foundation Plus
Grades 4-6 - the Foundation / Higher crossover zone.
27th February 2016
- 1Ratio2 marks
Red and blue sweets are in the ratio 2 : 7. There are 26 red sweets. How many sweets are there altogether?
- 2Vectors2 marks
a is the column vector (6, 3) and b is (0, -6). Work out a + b as a column vector.
- 3Probability Trees3 marks
6 of 9 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 4Frequency Trees3 marks
180 people were surveyed. 30 were adults, of whom 10 said yes. 40 of the children said yes. How many said yes altogether?
- 5Error Intervals2 marks
A number y is 31 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 February 2016, including the monthly compilation PDF.