Fix Text Formatted Numbers By Applying. In the Paste section select Values. Press CTRL C to copy the cell.

Now Excel will keep your leading 0s. In the Operation section select Add. 2 Methods of forcing a NUMBER cell TO a TEXT format.
One way to do that is to add zero 0 which automatically converts numbers in text format to numbers in numeric format.
Select the cells that contain the text numbers. Select a blank cell that doesnt have this problem type the number 1 into it and then press Enter. Weve already seen the worst case if Excel misunderstands a formatting. Supposing you calculate the total amount based on the unit price in cell A2 quantity in B2 and discount percentage in C2 using this calculation.