Matching Pairs NumbersOnline version Rational, Irrational, and Negative Rational Numbers by Kirsten Lucas 1 Irrational Number example: 2 A Irrational Number is: (Definition) 3 A Negative Rational Number is: (Definition) 4 Rational Number example: 5 Negative Rational Number example: 6 A Rational Number is: (Definition) A fraction where either the numerator or denominator is positive and the other is negative. √81 Any real number that can’t be written as a fraction. There is no way to express them. √11 2/-8 A number that can be written as a ratio/fraction of two numbers/integers. It can be expressed as a fraction or whole number.