Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
4th March 2015
- 1Speed and Density2 marks
A block has volume 175 cm^3 and density 7.5 g/cm^3. Work out its mass.
- 2Vectors3 marks
a is the column vector (-3, 6) and b is (-2, -6). Work out 3a - 3b as a column vector.
- 3Probability Trees3 marks
2 of 5 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 6, 12, 7, 4. Write down the cumulative frequency at the end of the third class.
- 5Recurring Decimals to Fractions3 marks
Write the recurring decimal 0.333... as a fraction in its simplest form.
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