What is a rational number and what is an irrational number What is a rational number what is irrational number

What is a rational number and what is an irrational number What is a rational number what is irrational number

Integers and fractions are collectively called rational numbers
Irrational numbers are numbers other than integers and fractions

Why should we distinguish rational numbers from irrational numbers Just know that infinite non-circulating decimals are irrational numbers, but why is it meaningful to separate them? Why should we distinguish rational numbers from irrational numbers Just know that infinite non-circulating decimals are irrational numbers, but why distinguish them?

In the future, there will be many irrational numbers in calculation. The common formula is root,√2 is irrational number.
It's a number, but you ca n' t always write down all the decimal places, so it's written in root form.
The number itself is meaningful and can not be ignored.
But it is irrational number, the significance of distinguishing is to facilitate calculation, easy to learn different calculation methods.
There's a lot of things you do n' t know when you study,
But it's too late to learn when you know what's useful.
So, kid, learn! As long as you're reading science and technology,
Then most of the knowledge in mathematics will accompany you for a lifetime.