Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
29th September 2004
- 1Probability Trees3 marks
4 of 9 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 2Cumulative Frequency2 marks
Four classes in order have frequencies 9, 3, 10, 5. Write down the cumulative frequency at the end of the third class.
- 3Recurring Decimals to Fractions3 marks
Write the recurring decimal 0.6969... as a fraction in its simplest form.
- 4Trigonometric and Exponential Graphs2 marks
The curve y = 2^x is drawn. Work out y when x = 4, and write down where the curve crosses the y-axis.
- 5Speed and Density2 marks
A block has volume 160 cm^3 and density 7.5 g/cm^3. Work out its mass.
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