Daily Practice · Higher

Daily Practice - Higher

Grades 6-7 - Higher-tier method and manipulation.

30th January 2008

5 questions · 13 marks · Grades 6-7 · 61 question types in this band

1
Conditional Probability3 marks
16 students study Spanish and 11 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
2
Cumulative Frequency2 marks
Four classes in order have frequencies 5, 7, 6, 9. Write down the cumulative frequency at the end of the third class.
3
Fractional and Negative Indices3 marks
Work out 125^(2/3).
4
Quadratic Formula3 marks
Work out the discriminant of 2x^2 - 3x + 12 = 0 and say how many real solutions it has.
5
Speed and Density2 marks
A block has volume 90 cm^3 and density 8 g/cm^3. Work out its mass.

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