How clever do you think you are? Do you think you fair up pretty well in tests because you're good at maths, English and science? Maybe you're a super speller and nothing catches you out, or perhaps you know all your chemical symbols. It may just be, on the other hand, that you are a great mathematician. Now it's time to try this fun quiz and see how good you really are – no cheating, though!

Many people think that they know how to spell everything, but it may surprise you to know that there are certain words that are constantly spelt incorrectly. Now see how you do...