Functions: add), - (minus sign to subtract), * (asterisk sign to multiply), and / (forward slash to divide). For example, if you entered "=B4+B5" in a blank cell, the formula would add the values from those cells and output the result. SUM Function: Allows you to refer to multiple cells and adds all the values. You can add individual cell references or ranges. If you entered "=SUM (C4,C5,C6)" into a blank cell, the formula would output the result of adding those three separate cells. Similarly, if you entered "=SUM(C4:C6)", the formula would output the same result of adding those cells. Note: Use cell references to the T-account titles to complete columns B and G. Use cell references to the T-account balances and formulas to complete columns C and H