Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
- 1Probability Trees3 marks
2 of 6 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 2Cumulative Frequency2 marks
A cumulative frequency graph is drawn for 164 values. What cumulative frequency do you read across from to estimate the lower quartile?
- 3Bounds2 marks
A mass is 160 kg, correct to the nearest 10. Write down the upper bound.
- 4Factorising Harder Quadratics3 marks
Factorise 3x^2 + 4x + 1.
- 5Repeated Percentage Change3 marks
A price rises by 10% and then falls by 10%. Work out the overall percentage change, to 2 decimal places.
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Every sheet is deterministic: the same date always regenerates the same five questions. All of May 2015, including the monthly compilation PDF.