Printable · GCSE Higher · ages 14-16
Exact calculation: fractions, surds and π worksheet — GCSE Higher
Fifteen questions on "exact calculation: fractions, surds and π" — DfE statement N8. Print it, or print three versions so neighbours cannot copy by letter; the key gives the letter for each version.
part Higher
Exact calculation: fractions, surds and π worksheet — GCSE Higher
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- 1.Work out 1 1/2 ÷ 3/4 exactly, giving your answer in its simplest form.
- 2.A circle has a radius of 3 cm. Which of these is the exact area of the circle?
- 3.Expand and simplify (2 + √3)², giving your answer in the form a + b√3.
- 4.A square tile has an area of 72 cm². Work out the exact perimeter of the tile, giving your answer in the form k√2 cm.
- 5.3/5 of a 5/6 litre bottle of juice is poured out. Work out the exact volume poured out, in litres.
- 6.Work out √3 × √12, giving your answer as an integer.
- 7.Work out 3/4 − 5/12 exactly, giving your answer in its simplest form.
- 8.A quarter-circle has a radius of 6 cm. Work out the exact perimeter of the quarter-circle, giving your answer in terms of π.
- 9.A circle has a circumference of 8π cm. Work out the exact area of the circle in terms of π.
- 10.A shape is made by joining a rectangle measuring 10 cm by 6 cm to a semicircle of diameter 6 cm along one of the rectangle's shorter sides. Work out the exact area of the shape, in terms of π.
- 11.Work out 5/6 × 2/9, giving your answer in its simplest form.
- 12.Rationalise the denominator of 6/√3, giving your answer in its simplest form.
- 13.A student works out the exact area of a circle with radius 4 cm by squaring the radius but forgetting to multiply by π. Work out the correct exact area of the circle, in terms of π.
- 14.The two shorter sides of a right-angled triangle are √12 cm and √24 cm. Work out the exact length of the hypotenuse.
- 15.Rationalise the denominator of 10/(4 − √6), giving your answer in its simplest form.
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