Integers introduction
https://youtu.be/3iuyWiNu3uA
What are Integers?
The word integer originated from the Latin word “Integer” which means whole or intact. Integers is a special set of numbers comprising zero, positive numbers and negative numbers.
Examples of Integers: – 1, -12, 6, 15.
Symbol
The integers are represented by the symbol ‘Z’.
Z= {……-8,-7,-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8,……}
https://youtu.be/3iuyWiNu3uA
Types of Integers
Integers come in three types:
- Zero (0)
- Positive Integers (Natural numbers)
- Negative Integers (Additive inverse of Natural Numbers)
Zero
Zero is neither a positive nor a negative integer. It is a neutral number i.e. zero has no sign (+ or -).
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Positive Integers
The positive integers are the natural numbers or also called counting numbers. These integers are also sometimes denoted by Z+. The positive integers lie on the right side of 0 on a number line.
| Z+ → 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30,…. |
Negative Integers
The negative integers are the negative of natural numbers. They are denoted by Z–. The negative integers lie on the left side of 0 on a number line.
Z– → -1, -2, -3, -4, -5, -6, -7, -8, -9, -10, -11, -12, -13, -14, -15, -16, -17, -18, -19, -20, -21, -22, -23, -24, -25, -26, -27, -28, -29, -30,…..