A number that can be made by dividing two integers an integer is a number with no fractional part. The word comes from ratio. Rational Numbers Yahoo Search Results Math Worksheets Irrational Numbers Number Worksheets Kindergarten 12 is a rational number 1 divided by 2 or the ratio of 1 to 2 075 is a rational number 34 1 is a rational number 11 2 is a rational number 21 212 is a rational number 212.