Daily Practice

Foundation Plus

4th August 1979

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

1
Ratio2 marks
Red and blue stickers are in the ratio 5 : 6. There are 30 red stickers. How many stickers are there altogether?
2
Vectors2 marks
a is the column vector (3, -7) and b is (-2, 3). Work out a + b as a column vector.
3
Probability Trees3 marks
3 of 6 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 + 28. Use it to estimate y when x = 11.
5
Error Intervals2 marks
A number y is 25 when truncated to the nearest whole number. Write down the error interval for y.

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