Classifying Real numbers

Introduction

Every number you’ve ever worked with belongs to a special “number family.” When we classify real numbers, we sort them into groups like natural numbers, whole numbers, integers, rational numbers, and irrational numbers. This is important because it helps us know whi...

Suppose you have a homework problem where you must classify five numbers: -0.35, √14, -√9, ∛18, and π—as rational or irrational.

Rational numbers can be written as a fraction of integers, and their decimals terminate or repeat. Irrational numbers are decimals that neither end nor repeat.

First, -0.35 is a terminating deci...