What do you do to check whether a number is rational or irrational? in your explanation, use an example of an irrational and rational number. can someone check my answer, ? i would deeply appreciate it. "rational numbers are numbers that can be written in fraction form. the numbers are all integers. irrational numbers are numbers that cannot be written as a fraction. they are non-repeating and nonterminating decimals. for example 6. is an irrational number. and 1/6, 2,9, and 3/4 are all rational numbers."