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	You will probably need pen and paper to answer these questions ... and a calculator!

1) Write 7 out of 36 as a percentage to 1 dp.

2) Work out

24.1 × 71.9
15.7 + 21.6

to 3 sf.

3) A cylinder has volume 432 cm³.
The area of its cross section is 27.8 cm².
Find its length to 3 sf.

4) Find the value of u to 1 dp such that

1
u

1
3.6

–

1
9.4

5) Find the positive value of x so that x² + 5x = 20.
Give your answer to 2 decimal places.