A Rational Number can be make by separating an essence by an integer.

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(An creature itself has no fractional part.)


1.5 is a reasonable number since 1.5 = 3/2 (3 and 2 space both integers)


Most numbers we usage in daily life room Rational Numbers.

You have the right to make a couple of rational numbers yourself utilizing the sliders below:

Number together a portion Rational?
5 5/1 Yes
1.75 7/4 Yes
.001 1/1000 Yes
−0.1 −1/10 Yes
0.111... 1/9 Yes
√2(square source of 2) ? NO !

Oops! The square root of 2 cannot be written as a basic fraction! and also there room many more such numbers, and also because they are not rational lock are referred to as Irrational.

Another famous irrational number is Pi (π):


Formal an interpretation of rational Number

More formally we say:

A rational number is a number that deserve to be in the form p/qwhere p and also q are integers and also q is no equal to zero.

p q ns / q =
1 1 1/1 1
1 2 1/2 0.5
55 100 55/100 0.55
1 1000 1/1000 0.001
253 10 253/10 25.3
7 0 7/0 No! "q" can"t it is in zero!

Just remember: q can"t be zero

Using rational Numbers


If a rational number is still in the type "p/q" it have the right to be a little daunting to use, for this reason I have actually a special page on exactly how to:

Add, Subtract, Multiply and Divide rational Numbers

Fun truth ....

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The old greek mathematician Pythagoras thought that every numbers were rational, yet one that his student Hippasus confirmed (using geometry, that is thought) the you might not write the square source of 2 together a fraction, and also so it to be irrational.

But followers of Pythagoras might not accept the presence of irrational numbers, and it is said that Hippasus was drowned in ~ sea as a penalty from the gods!