The simple task of displaying decimal places sometimes causes angst for spreadsheet users. If you have a list of both large and small numbers, there's tension between rounding the small numbers to whole values and making the large numbers harder to read by adding two trailing zeros.
In this article, I'll describe how to add decimal places on demand by way of using a custom number format. In Part 2 of this series, I'll demonstrate an alternative that uses the MOD function along with Excel's Conditional Formatting feature.
Figure 1 shows a sample report with sales figures. Columns C and D both show currency amounts, so the same formatting can be applied to all cells in those columns. However, in column A, rather than displaying the amount in cell A2 as 3,383.00, we'd like to present it as 3,383, but simultaneously show the amount in cell A3 as 0.50.