One

The positive integer one or 1 is smallest positive integer that is greater than zero. It is commonly shown using the Arabic numeral, 1. In Roman numerals, it is shown as an uppercase "i".

PEMDAS Operations

Addition

When a number is added by one, the number is increased by one.

For example, .

Subtraction

When a number is subtracted by one, the number is decreased by one. Examples: 2-1=1, 4-1=3

When one is subtracted by a number, it depends on what the number is.

For example: ,

Multiplication

Any number multiplied by One equals the number.

Division

Any number divided by one is that same number.

Exponents

Any number to the power of 1 is that number.

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