Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
15th March 2001
- 1Bounds2 marks
A mass is 650 kg, correct to the nearest 10. Write down the lower bound.
- 2Quadratic Formula3 marks
Work out the discriminant of 4x^2 - 8x + 6 = 0 and say how many real solutions it has.
- 3Repeated Percentage Change3 marks
A town's population is 11500 and grows by 5% each year. Work out the population after 5 years, to the nearest whole number.
- 4Similar Shapes (Area and Volume)3 marks
Two similar shapes have lengths in the ratio 1 : 2. The smaller has an area of 15 cm^2. Work out the area of the larger.
- 5Conditional Probability3 marks
13 students study Spanish and 3 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
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