The table below will help the classification of numbers much. He went clear things. **Of important observations, you need to do in the chart.** **Observation # 1**:

Note that v (9) is a natural whole. It is because that v (9) = 3

**Observation # 2**:

Note that the only difference between the natural numbers and integers is zero.

= Integers numbers natural + zero

**Comment # 3**:

Note that the difference between integers and integers are negative numbers.

Integer = integer + the negative integers

**Comment # 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 decimal of endpoint or a repeat decemal

Example: 1/2 = 0.5 and 0.5 are decimal endpoint. 1/3 = 0.3333333 and 0.3333333 are a recurring decimal

**Comment # 6**:

Rational numbers = integers + fractions

**Comment # 7**:

Irrational numbers are numbers that cannot be written as a fraction

Example: pi = 3.14…, 2.224879566117426874, v (7)

Another way to see is that they are not repeating check digits or decimal endpoint

**Comment # 8**:

Numbers = real number rational + irrational numbers

**Comment # 9**:

The difference between real numbers and complex numbers is that complex numbers to solutions for the expressions following and much more!

v(-7), v(1-8), v(-25) = 5i, etc….

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Other good topics:

odd and even numbers

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