Overview. For sensors like the VEX Ultrasonic sensor that return a range of values, we often simply want to check if the returned value is more than, equal to, or less than some value called a threshold. For example say that we have the sensor set up and are driving around, but we need to stay at least 5 inches (127 mm) away from any obstacles.
How do I tell excel to treat a  in an excel formula as a ? :) Excel reads quotation marks as signifying text inside, but my text field requires a  to be included in it as well, so I need to somehow tell Excel that the  is part of the text field within the two s :p. Does that make sense? Mike.
The Excel - Operator. The simplest Excel subtraction formula consists of the = sign, followed by two or more numbers, with the - operator in between them. This is shown in the above spreadsheet on the right. The formula in the example spreadsheet subtracts the numbers 2 and 5 from the number 11 and returns the value 4. As with all Excel formulas, instead of typing in the numbers directly, you can use references to cells containing numbers.