Daily Practice · Foundation Plus

Daily Practice - Foundation Plus

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

17th December 2015

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

1
Best Buy Questions3 marks
A pack of 6 batteries costs £3.00. A pack of 12 costs £5.88. Which pack is better value?
2
Vectors2 marks
a is the column vector (5, -5) and b is (1, 5). Work out a + b as a column vector.
3
Probability Trees3 marks
4 of 10 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Cumulative Frequency2 marks
A cumulative frequency graph is drawn for 120 values. What cumulative frequency do you read across from to estimate the lower quartile?
5
Error Intervals2 marks
A number y is 39 when truncated to the nearest whole number. Write down the error interval for y.

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