Below is the list of 43 Excel math functions:

FunctionFormula
ABS FunctionAbs(Num)
BASE FunctionBase(Num, Radix [Min_Length])
CEILING FunctionCeiling(Num, Significance)
CEILING.PRECISE FunctionCeiling.Precise(Num, Significance)
COMBIN FunctionCombin(Num, Num_Chosen)
COMBINA FunctionCombina(Num, Num_Chosen)
DECIMAL FunctionDecimal(Text, Radix)
DEGREES FunctionDegrees(Angle)
EVEN FunctionEven(Num)
EXP FunctionExp(Num)
FACT FunctionFact(Num)
FACTDOUBLE FunctionFactdouble(Num)
FLOOR FunctionFloor(Num, Significance)
FLOOR.PRECISE FunctionFloor.Precise(Num, [Significance])
INT FunctionInt(Num)
LN FunctionLn(Num)
LOG FunctionLog(Num, [Base])
LOG10 FunctionLog10(Num)
MOD FunctionMod(Num, Divisor)
MROUND FunctionMround(Num, Multiple)
ODD FunctionOdd(Num)
PI FunctionPi()
POWER FunctionPower(Num, Power)
PRODUCT FunctionProduct(Num1, [Num2], …)
QUOTIENT FunctionQuotient(Numerator, Denominator)
RADIANS FunctionRadians(Angle)
RAND FunctionRand()
RANDBETWEEN FunctionRandbetween(Bottom, Top)
ROMAN FunctionRoman(Num, [Form])
ROUND FunctionRound(Num, Num_Digits)
ROUNDDOWN FunctionRounddown(Num, Num_Digits)
ROUNDUP FunctionRoundup(Num, Num_Digits)
SQRT FunctionSqrt(Num)
SQRTPI FunctionSqrtpi(Num)
SUM FunctionSum(Num1,[Num2],…)
SUMIF FunctionSumif(Range, Criteria, [Sum_Range])
SUMIFS FunctionSumifs(Sum_Range, Range1, Criteria1, [Range2, Criteria2], …)
SUMPRODUCT FunctionSumproduct(Array1, [Array2], [Array3], …)
SUMSQ FunctionSumsq(Num1, [Num2], …)
SUMX2MY2 FunctionSumx2My2(Array_X, Array_Y)
SUMX2PY2 FunctionSumx2Py2(Array_X, Array_Y)
SUMXMY2 FunctionSumxmy2(Array_X, Array_Y)
TRUNC FunctionTrunc(Num, [Num_Digits])