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