Select the cell where you want the result
Type the formula starting with =
Use cell references instead of typing numbers directly when possible
Press Enter to calculate the result
Use + for addition
Use – for subtraction
Use * for multiplication
Use / for division
Use ^ for exponentiation
Use SUM for adding a range of cells
Use AVERAGE for finding the mean of values
Use MIN for the smallest value
Use MAX for the largest value
Use COUNT for counting numeric cells
Use IF for conditional calculations
Copy formulas by dragging the fill handle
Check cell references if the result is incorrect
Use parentheses to control calculation order