To highlight numbers less than a certain value, including numbers entered as text like "<9", "<10", etc., you can use conditional formatting with a formula strips the symbols as needed and handles the result as a number. In the example shown, "input" is a named range for cell G2.
The formula first uses the ISNUMBER function to test if the value is a number, and applies a simple logical if so:
When you use a formula to apply conditional formatting, the formula is evaluated relative to the active cell in the selection at the time the rule is created. So, in this case the formula =B4>100 is evaluated for each of the 40 cells in B4:G11...
When you use a formula to apply conditional formatting, the formula is evaluated for each cell in the range, relative to the active cell in the selection at the time the rule is created. So, in this case, if you apply the rule to B4:G11, with B4 as...
The Excel ISNUMBER function returns TRUE when a cell contains a number, and FALSE if not. You can use ISNUMBER to check that a cell contains a numeric value, or that the result of another function is a number.
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