Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
27th January 2007
- 1Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 4, y = 48. Work out y when x = 9.
- 2Similar Shapes (Area and Volume)3 marks
Two similar shapes have lengths in the ratio 1 : 4. The smaller has an area of 26 cm^2. Work out the area of the larger.
- 3Conditional Probability3 marks
17 students study Spanish and 7 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
- 4Box Plots2 marks
A box plot has minimum 5, lower quartile 10, median 15, upper quartile 19 and maximum 24. Work out the interquartile range.
- 5Surds2 marks
Write sqrt(50) in the form a sqrt(b), where b is as small as possible.
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