Once you have the idea of exponents down and can solve problems using circles, marbles or multiplication, it is time to work with radicals. Where exponents usually make numbers bigger, radicals are their opposite and make numbers smaller. When solving equations, radicals are used to get rid of exponents, just like division is used to get rid of multiplication. This example shows the third root of 8. This means, which number appears three times as a factor of 8 or what put into 3 multiplication blanks would get an answer of 8. If you think about it in terms of exponents, it is saying what number multiplied by itself 3 times makes 8.
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