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Math functions transform numeric values.

abs

Returns the absolute value of a number.
A negative value becomes positive. A positive value stays positive.

sqrt

Returns the square root of a number.
The input must be zero or positive. Use conditional logic if the input can be negative:

ceiling

Rounds a number up to the nearest multiple of a specified significance.
This follows Excel CEILING behavior.

floor

Rounds a number down to the nearest multiple of a specified significance.
This follows Excel FLOOR behavior.

round

Rounds a number to the requested number of digits.
This follows Excel ROUND behavior.