Is 0.54 a rational number why or why not

Answer 1

Yes.

http://www.mathsisfun.com/rational-numbers.html

Answer 2

0.54 is a rational number = 54 / 100 = 2 * 27 / 2 * 50 = 27 / 50

But if 0.54 mean 0.5454545454 then:

100 * 0.5454545454 = 54.54545454

100 * 0.5454545454 - 0.5454545454 = 99 * 0.5454545454 =

54.54545454 - 0.54545454 = 54

99 * 0.5454545454 = 54 Divide both sides by 99

0.5454545454 = 54 / 99 = 6 * 9 / 11 * 9 = 6 / 11