Being able to express numbers in its equivalent
forms allows you to give more accurate and correct answers. By using
equivalents forms you may find a simply and easier way to solve the given
equation.
For example, in fraction, by simply expressing equivalent fractions with common
denominator, you can easily subtract and add the given numbers in an easy way.
There are a lot of numbers that are equivalent, and there are a lot of way to
solve a single problem to get a correct answer.