How to Use the Excel SUM and PRODUCT Formula for Multiplication and Addition in WPS Office
Question details
The user needs a reliable formula to multiply K11 by L11 and then add M11, and wants to correct the range syntax and separator settings in the SUM and PRODUCT formulas.
- Product
- WPS Spreadsheets
- Device & OS
- not provided
- Scenario
- The user is building a worksheet calculation that combines multiplication and addition across cells K11, L11, and M11.
- Observed behavior
- Formula attempts using SUM and PRODUCT can return errors or unexpected results when list separators or range syntax do not match the regional settings.
Open the workbook that contains K11, L11, and M11. Check the formula bar and your regional list separator so you use the same separator that WPS Spreadsheets accepts.
Use the direct formula =K11*L11+M11
Best when you need the shortest, most transparent way to multiply two cells and add a third.
This formula avoids SUM and PRODUCT separator ambiguity entirely, so it is the most reliable choice when regional list separators are causing errors.
Click the cell where you want the result to appear.
Enter =K11*L11+M11 in the formula bar or directly into the cell.
Press Enter to confirm. WPS Spreadsheets calculates the product of K11 and L11 and adds M11.
Use =SUM(K11*L11,M11) with the correct list separator
Use when you prefer a SUM function wrapper or already have SUM logic in the workbook.
Use =SUM(PRODUCT(K11:L11),M11) for range-based clarity
Use when you want to document that K11 and L11 are multiplied inside PRODUCT before SUM adds M11.
Calculate K11*L11+M11 Correctly in WPS Spreadsheets
Use a direct arithmetic formula, SUM wrapper, or PRODUCT/SUM combination in WPS Spreadsheets to avoid list separator and range syntax errors while keeping full Excel formula compatibility.
- 1. Open your workbook in WPS Spreadsheets: Launch WPS Office and open the Excel-compatible workbook containing K11, L11, and M11.
- 2. Select the result cell: Click the cell where the formula result should appear.
- 3. Enter one of the verified formulas: Type =K11*L11+M11, =SUM(K11*L11,M11), or =SUM(PRODUCT(K11:L11),M11) using the list separator shown by your locale.
- 4. Press Enter and verify: Press Enter and confirm the result matches the expected multiplication and addition.
- 5. Save in .xlsx format: Use File > Save As and choose Excel Workbook (.xlsx) to keep the formula compatible with Microsoft Excel.
Frequently Asked Questions
Which formula is best for multiplying K11 and L11 then adding M11?
Use =K11*L11+M11. It is the shortest formula and avoids SUM/PRODUCT separator issues completely.
Why does my SUM and PRODUCT formula show an error or wrong result?
The likely cause is a list separator mismatch or an incorrect range. If your regional settings use semicolons, use =SUM(K11*L11;M11); if commas, use =SUM(K11*L11,M11). Check the separator suggested in the WPS formula tooltip.
Can I use semicolons instead of commas in WPS Spreadsheets formulas?
Yes, but only when the system regional list separator is semicolon. In a US comma-based locale, semicolons can produce an error, so use commas or switch to the direct formula =K11*L11+M11.
Does WPS Spreadsheets support the same Excel SUM and PRODUCT syntax as Microsoft Excel?
Yes. WPS Spreadsheets supports Excel-compatible formulas such as =SUM(K11*L11,M11) and =SUM(PRODUCT(K11:L11),M11) and can open and save .xlsx workbooks.
How do I quickly check which list separator WPS Spreadsheets is using?
Start typing a formula and notice the separator shown in the formula tooltip, or enter a simple SUM range; the accepted punctuation matches the system regional settings.
