Daily Practice · Higher
Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
- 1Probability 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.
- 2Cumulative Frequency2 marks
Four classes in order have frequencies 7, 10, 9, 7. Write down the cumulative frequency at the end of the third class.
- 3Reverse Percentages3 marks
A bill is £336 including VAT at 20%. Work out the amount before VAT.
- 4Factorising Harder Quadratics3 marks
Factorise 12x^2 - x - 1.
- 5Speed and Density2 marks
A block has volume 60 cm^3 and density 11 g/cm^3. Work out its mass.
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