Daily Practice

Higher

31st January 1991

5 questions · 14 marks · Grades 6-7 · 61 question types in this band

1
Bounds2 marks
A mass is 90 kg, correct to the nearest 10. Write down the lower bound.
2
Quadratic Formula3 marks
Work out the discriminant of x^2 - 5x + 8 = 0 and say how many real solutions it has.
3
Repeated Percentage Change3 marks
A town's population is 14000 and grows by 6% each year. Work out the population after 6 years, to the nearest whole number.
4
Similar Shapes (Area and Volume)3 marks
Two similar shapes have lengths in the ratio 1 : 5. The smaller has an area of 16 cm^2. Work out the area of the larger.
5
Conditional Probability3 marks
20 students study Spanish and 6 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.

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