Daily Practice · Foundation Plus

Daily Practice - Foundation Plus

Grades 4-6 - the Foundation / Higher crossover zone.

12th December 2009

5 questions · 12 marks · Grades 4-6 · 128 question types in this band

1
Ratio2 marks
Red and blue sweets are in the ratio 5 : 9. There are 45 red sweets. How many sweets are there altogether?
2
Vectors2 marks
a is the column vector (5, 1) and b is (1, 7). Work out a + b as a column vector.
3
Probability Trees3 marks
2 of 5 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Scatter Graphs3 marks
A line of best fit on a scatter graph has equation y = 9x + 33. Use it to estimate y when x = 3.
5
Error Intervals2 marks
A number y is 52 when truncated to the nearest whole number. Write down the error interval for y.

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