Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
- 1Speed and Density2 marks
A block has volume 30 cm^3 and density 8 g/cm^3. Work out its mass.
- 2Vectors3 marks
a is the column vector (-5, 4) and b is (-4, -5). Work out 3a - 2b as a column vector.
- 3Probability Trees3 marks
1 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 4, 10, 10, 3. Write down the cumulative frequency at the end of the third class.
- 5Standard Form3 marks
Work out (20 x 10^6) / (5 x 10^4). Give your answer in standard form.
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