One

The positive integer one or 1 is smallest positive integer that is greater than zero. It is commonly shown using the Arabic number, 1.

PEMDAS Operations

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

For example, 3+1=4.

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: 1-2=-1, 1-(-2)=3

Any number multiplied by One equals the number.

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