Classification of numbersThe chart below will help you with the classification of numbers a lot. It will makes things crystal clear. Important observations you need to make from the chart.
Observation #1:Notice that √(9) is a natural number. It is because √(9) = 3 Observation #2: Notice that the only difference between natural numbers and whole numbers is the zero. Whole numbers = Natural numbers + zero Observation #3: Notice that the difference between whole numbers and integers are the negative numbers. Integers = Whole numbers + the negative of the whole numbers Observation #4: All integers are fractions. Not all fractions are integers Example: 2 is an integer and can be written as 2/1 to make it a fraction. However, 1/3 = 0.333333333 is not an integer Observation #5: Fractions can be written as a terminating decimal or a repeating decemal Example: 1/2 = 0.5 and 0.5 is a terminating decimal. 1/3 = 0.3333333 and 0.3333333 is a repeating decimal Observation #6: Rational numbers = Integers + fractions Observation #7: Irrational numbers are numbers that cannot be written as a fraction Example: pi= 3.14..., 2.224879566117426874, √(7) Another way to see them is that they are neither repeating decimals nor terminating decimals Observation #8: Real numbers = rational numbers + irrational numbers Observation #9: The difference between complex numbers and real numbers is that complex numbers give solutions for the following expressions and more! √(7), √(18), √(25) = 5i, etc... Among the different types of numbers, fractions is among the toughest to understand Still struggling with fractions? Get rid of your fears and frustrations once and for all! I offer a book that is fully illustrated to make understanding crystal clear Buy my ebook. It offers a thorough coverage of fractions! Other good topics: even and odd numbers 




