What is FLOOR.MATH function in Excel? FLOOR.MATH function is one of the Math and Trig functions in Microsoft Excel that round a number down to the nearest integer or to the nearest multiple of significance. Syntax of FLOOR.MATH function FLOOR.MATH(number, significance, mode) The FLOOR.MATH function syntax has the following arguments. Number: The number to be rounded down. Significance(Optional): The multiple to…