Math FunctionsDate and Time FunctionsText FunctionsExamples of Math FunctionsUsing SUM to Add NumbersUsing AGGREGATE to Ignore Error Cells or Filtered RowsRounding NumbersUsing SUBTOTAL Instead of SUM with Multiple Levels of TotalsTotaling Visible Cells Using SUBTOTALUsing RAND and RANDBETWEEN to Generate Random Numbers and DataUsing =ROMAN() to Finish Movie Credits and =ARABIC() to Convert Back to DigitsUsing ABS() to Figure Out the Magnitude of ErrorUsing GCD and LCM to Perform Seventh-Grade MathUsing MOD to Find the Remainder Portion of a Division ProblemUsing SQRT and POWER to Calculate Square Roots and ExponentsUsing COUNTIF, AVERAGEIF, and SUMIF to Conditionally Count, Average, or Sum DataUsing Conditional Formulas with Multiple Conditions: SUMIFS(), AVERAGEIFS(), and COUNTIFS()Dates and Times in ExcelUnderstanding Excel Date and Time FormatsExamples of Date and Time FunctionsUsing NOW and TODAY to Calculate the Current Date and Time or Current DateUsing YEAR, MONTH, DAY, HOUR, MINUTE, and SECOND to Break a Date/Time ApartUsing DATE to Calculate a Date from Year, Month, and DayUsing TIME to Calculate a TimeUsing DATEVALUE to Convert Text Dates to Real DatesUsing TIMEVALUE to Convert Text Times to Real TimesUsing WEEKDAY to Group Dates by Day of the WeekUsing WEEKNUM or ISOWEEKNUM to Group Dates into WeeksCalculating Elapsed TimeUsing EOMONTH to Calculate the End of the MonthUsing WORKDAY or NETWORKDAYS or Their International Equivalents to Calculate WorkdaysUsing International Versions of WORKDAY or NETWORKDAYSExamples of Text FunctionsJoining Text with the Ampersand (&) OperatorUsing LOWER, UPPER, or PROPER to Convert Text CaseUsing TRIM to Remove Leading and Trailing SpacesUsing the CHAR or UNICHAR Function to Generate Any CharacterUsing the CODE or UNICODE Function to Learn the Character Number for Any CharacterUsing LEFT, MID, or RIGHT to Split TextUsing LEN to Find the Number of Characters in a Text CellUsing SEARCH or FIND to Locate Characters in a Particular CellUsing SUBSTITUTE to Replace CharactersUsing REPT to Repeat Text Multiple TimesUsing EXACT to Test CaseUsing TEXT to Format a Number as TextUsing the T and VALUE Functions