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Quick answer. Inspect whether the source cells are numbers or text. In this controlled exercise A2:A4 contain text from TO_TEXT; enter =VALUE(A2) in B2, fill down, then =SUM(B2:B4). The expected numeric total is 25.
Enter the controlled formulas from the practice sheet instructions into a private Google Sheet, then compare the numeric helper column with the answer check.
Before you start. The controlled TO_TEXT source is reproducible but only models one imported-text symptom. Real CSV imports may auto-detect numbers. VALUE recognizes number formats that the sheet's locale understands; nonnumeric strings can return an error. Do not silently alter currency or decimal separators.
1. Create a dependable text case
In a private Google Sheet, enter the three TO_TEXT formulas from the practice file in A2:A4. This deliberately makes strings that look like twelve, eight and five. A real CSV import may be auto-converted, so the practice file uses formulas to guarantee the starting state. Keep the original values in column A while testing a helper column.
Checkpoint: A2:A4 are text representations of 12, 8 and 5.
2. Observe the misleading total
Enter =SUM(A2:A4) in a separate scratch cell and compare it with the arithmetic answer twenty-five. If the controlled source is text, the sum does not include those text values as intended. Do not judge from alignment or cell color alone; inspect a source formula and confirm TO_TEXT is present.
Checkpoint: The source column is not yet a reliable numeric total.
3. Convert one source at a time
In B2 enter =VALUE(A2), then fill B3 and B4. Google's VALUE function converts recognized numeric strings into numbers. Check each helper output before totaling: twelve, eight and five. If a real imported amount contains unexpected characters, VALUE may error; investigate the content and locale rather than wrapping everything in IFERROR.
Checkpoint: B2=12, B3=8, B4=5 as numbers.
4. Sum the converted helper range
Enter =SUM(B2:B4) in B5. It should return twenty-five. Compare this with twelve plus eight plus five calculated independently. Keep the original text column until you have checked every row; replacing source values too early makes it harder to find a bad import or a changed separator.
Checkpoint: B5=25 and A2:A4 preserved.
5. If conversion fails on a real sheet
Open the failing cell and inspect spaces, currency symbols, thousands and decimal separators, and the spreadsheet locale. VALUE supports formats the sheet understands but cannot turn arbitrary labels into valid numbers. Fix the source specification or use a documented cleaning step for that particular format before you rerun the row check.
Checkpoint: No blanket conversion claim for unknown imports.
Verify the result
The controlled A2:A4 values are strings created with TO_TEXT; the VALUE helper in B2:B4 yields the numbers 12, 8 and 5. SUM of the converted helper range is 25. If VALUE produces an error for real imported values, stop and inspect their symbols, separators and locale instead of forcing a conversion or claiming an answer.
If it still does not work
If VALUE returns an error in the helper column, inspect the failing source cell for spaces, currency symbols or separators that do not match the sheet's locale. Check B2, B3 and B4 individually before summing; in the controlled example they must be numeric 12, 8 and 5. If the helper values are correct but B5 is not 25, verify that its formula is =SUM(B2:B4). Keep the original text column until every row is accounted for.
Official sources
- Google Sheets product guidance (checked 16 October 2026).
- Google Sheets product guidance (checked 16 October 2026).
- Google Sheets product guidance (checked 16 October 2026).
Video panels without a marked actual-app capture are illustrative diagrams of the fictional exercise.
Practice downloads.
The exercise files contain invented information. Save a local copy before editing.