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Fractions and Rational Numbers

We’ve seen a lot of posts on fractions, for example: Adding Fractions, Subtracting Fractions, Dividing Fractions, and Fraction Equivalents… but what exactly are fractions? What kind of number are they? Today, we are going to look at fractions and rational numbers.

All fractions are rational numbers.

And, what are rational numbers?  They are numbers that can be represented by a fraction. If a number can’t be represented by a fraction, it’s called an irrational number.

For example:

rational numbers

So then how do we know if a number is rational? Let’s look at different kinds of numbers and see which ones are rational and which ones are irrational.

rational numbers

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Fun is our brain’s favorite way of learning
Diane Ackerman
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