is o.4 over 0.8 a rational or irrational number?

Question

0.4

___

 

0.8

 

Answer 1

YES

 

0.4      0.4 * 10            4

---- = ------------ = ----------- =   1/2

0.8      0.8 * 10            8

 

First, multiplies the top and the bottom by 10 to

clear away the decimals. The decimal moves

one place to your right --->

The fraction becomes 4/8 which reduces to 1/2

 

Rational numbers are proper or improper fractions

where the top and bottom are integers. Their

decimals stop or repeat in a CLEAR pattern.