Providing a value also gives you a visual reminder in the future. Calculate grades with VLOOKUP Generic formula. However, I recommend you always provide the last argument explicitly because it forces you to consider what you want. VLOOKUP will perform an approximate match by default, so there is technically no need to supply the 4th argument. Note: if the score is less than the first entry in the table, VLOOKUP will return the #N/A error. Generic formula to calculate grade: VLOOKUP ( score, table, gradecolumn, 1 ) VLOOKUP by default does approximate match, if we omit range lookup variable. In other words, VLOOKUP will match the last value that is less than or equal to the lookup value. In VLOOKUP approximate match, if a value is not found then the last value that is less then lookup value is matched and value from given column index is returned. If VLOOKUP doesn't find an exact match, it will continue scanning until it finds a value greater than the lookup value, then it will "step back", and return the grade in the previous row. If it finds an exact match, it will return the grade at that row. With a score provided as a lookup value, VLOOKUP will scan the first column of the table. In approximate match mode VLOOKUP assumes the table is sorted by the first column. Finally, the last argument for VLOOKUP, the confusingly named "range lookup" is set to TRUE, to tell VLOOKUP to perform an "approximate match". The column index is provided as 2, since we want VLOOKUP to return a grade from the second column. Complete the formula and then press Enter. From Excel’s ribbon choose the Formulas tab, then from the Define Names group drop-down the Use in Formula list and select the range name. The lookup table is the named range "key" (B5:C9). To extend your formula to, for example, VLOOKUP (B2,nmGrades), type the name you’ve given to the range of cells comprising your list.
In this example, the scores in column F are lookup values for the VLOOKUP function.
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