Question

What operation does a fraction bar represent?

Answer 1

The fraction bar represents the operation of division.
To write the fraction `21/7` is the same as `21÷7`.
In a way it is a compact and immediate way of writing rational numbers. For example:
`0.25` can be written as `1/4`
In some cases it is easier to understand a fraction than a decimal; in a car, for example, it is used to represent the content of the fuel tank.

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