Daily Practice · Foundation Plus

Daily Practice - Foundation Plus

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

10th August 2019

5 questions · 11 marks · Grades 4-6 · 128 question types in this band

1
Ratio2 marks
Red and blue marbles are in the ratio 4 : 5. There are 44 red marbles. How many marbles are there altogether?
2
Vectors2 marks
a is the column vector (-4, 6) and b is (-1, 5). Work out a + b as a column vector.
3
Probability Trees3 marks
4 of 7 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Box Plots2 marks
A box plot has minimum 13, lower quartile 15, median 22, upper quartile 32 and maximum 39. Work out the interquartile range.
5
Error Intervals2 marks
A number y is 11 when truncated to the nearest whole number. Write down the error interval for y.

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