What is CEILING.MATH function in Excel? CEILING.MATH function is one of the Math and Trig functions in Microsoft Excel that rounds a number up to the nearest integer or to the nearest multiple of significance. Syntax of CEILING.MATH function CEILING.MATH(number, [significance], [mode]) The CEILING.MATH function syntax has the following arguments. Number: Number must be less than 9.99E+307 and greater than -2.229E-308.…