To enter an Excel formula into a cell, you start with an equal (=) sign. Excel then knows that the expression that follows should be interpreted as a calculation, not text. After the equal sign, you enter the formula. For example, you can find the sum of the numbers in cells C2 and C3 by using the formula =C2+C3. After you have entered a formula into a cell, you can revise it by clicking the cell and then editing the formula in the formula bar. For example, you can change the preceding formula to =C3-C2, which calculates the difference between the contents of cells C2 and C3.
Answers & Comments
To enter an Excel formula into a cell, you start with an equal (=) sign. Excel then knows that the expression that follows should be interpreted as a calculation, not text. After the equal sign, you enter the formula. For example, you can find the sum of the numbers in cells C2 and C3 by using the formula =C2+C3. After you have entered a formula into a cell, you can revise it by clicking the cell and then editing the formula in the formula bar. For example, you can change the preceding formula to =C3-C2, which calculates the difference between the contents of cells C2 and C3.