Types of Numbers | iPhone Calculator Tutorial

0:03 - 0:24 Natural numbers
0:25 - 0:36 Whole numbers
0:37 - 0:46 Integers
0:47 - 1:12 Rational numbers
1:13 - 1:32 Irrational numbers



The Natural numbers are counting numbers, 1, 2, 3, 4, 5, and so on, continuing endlessly, representing all positive numbers without limit.
Natural numbers do not include 0, fractions, decimals, or negative numbers.
Whole Numbers are counting numbers that start from 0 and go on till infinity. For example, 0, 1, 2, 3, 4, and so on. An integer is a whole number (not a fractional number) that can be positive, negative, or zero. A rational number is any number that can be written as a fraction (a/b), where a and b are whole numbers and b is not zero. Whole numbers and decimals can also be rational! If a decimal ends or repeats in a pattern, it's a rational number. Irrational numbers are the numbers that can’t be written as fractions, and their decimal part never ends or repeats! π (pi) ≈ 3.141592653…
√2 ≈ 1.414213… square root of 2
√3 ≈ 1.732050…square root of 3
e (Euler’s Number) ≈ 2.7182818…

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