Daily Practice - Foundation Plus
Grades 4-6 - the Foundation / Higher crossover zone.
27th January 2015
- 1Writing and Simplifying Ratio2 marks
Write the ratio 3 : 27 in the form 1 : n.
- 2Vectors2 marks
a is the column vector (-3, 3) and b is (0, -5). Work out a + b as a column vector.
- 3Probability Trees3 marks
6 of 10 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 4Frequency Trees3 marks
200 people were surveyed. 50 were adults, of whom 15 said yes. 15 of the children said yes. How many said yes altogether?
- 5Error Intervals2 marks
A number y is 49 when truncated to the nearest whole number. Write down the error interval for y.
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