Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
19th January 2005
- 1Speed and Density2 marks
A block has volume 70 cm^3 and density 11 g/cm^3. Work out its mass.
- 2Vectors3 marks
a is the column vector (2, 3) and b is (3, -6). Work out 5a - 5b as a column vector.
- 3Probability Trees3 marks
1 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 7, 9, 11, 10. Write down the cumulative frequency at the end of the third class.
- 5Recurring Decimals to Fractions3 marks
Write the recurring decimal 0.111... as a fraction in its simplest form.
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