Daily Practice · Higher
Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
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3rd February 2016
- 1Speed and Density2 marks
A block has volume 155 cm^3 and density 8 g/cm^3. Work out its mass.
- 2Vectors3 marks
a is the column vector (4, 1) and b is (-3, -1). Work out 2a - 5b as a column vector.
- 3Probability Trees3 marks
4 of 6 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 4Cumulative Frequency2 marks
Four classes in order have frequencies 5, 5, 12, 12. Write down the cumulative frequency at the end of the third class.
- 5Fractional and Negative Indices3 marks
Work out 8^(2/3).
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