Daily Practice - Foundation Plus
Grades 4-6 - the Foundation / Higher crossover zone.
26th June 2007
- 1Writing and Simplifying Ratio2 marks
Write the ratio 6 : 48 in the form 1 : n.
- 2Vectors2 marks
a is the column vector (0, -2) and b is (3, 6). Work out a + b as a column vector.
- 3Probability Trees3 marks
1 of 6 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 4Frequency Trees3 marks
230 people were surveyed. 90 were adults, of whom 10 said yes. 45 of the children said yes. How many said yes altogether?
- 5Error Intervals2 marks
A number y is 32 when truncated to the nearest whole number. Write down the error interval for y.
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