Daily Practice

Higher

21st August 1989

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

1
Bounds2 marks
A mass is 22.9 kg, correct to 1 decimal place. Write down the upper bound.
2
Quadratic Formula3 marks
Work out the discriminant of x^2 + 5x + 10 = 0 and say how many real solutions it has.
3
Repeated Percentage Change3 marks
A price rises by 20% and then falls by 10%. Work out the overall percentage change, to 2 decimal places.
4
Similar Shapes (Area and Volume)3 marks
Two similar shapes have lengths in the ratio 1 : 2. The smaller has an area of 22 cm^2. Work out the area of the larger.
5
Conditional Probability3 marks
24 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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