Data in the Origin worksheet is treated as either text or numeric data. While the display of text data in the worksheet is fairly straightforward, the display of numeric data depends upon such things as the display format (decimal, scientific, etc.), the data type (double, short, etc.), number of displayed decimal or significant digits, and any chosen custom formatting.
Unless you choose another Data Type, all numbers in the worksheet are stored internally as floating point, double precision (Double(8)) numbers. This includes data formatted to display date and time, data formatted to display in degrees-minutes-seconds or decimal numbers formatted to display a fixed number of decimal digits.
When dealing with numeric data, understand that what you see in the worksheet is a representation of a number that is stored internally. This is important for two reasons:
Origin offers extensive support for custom formatting of worksheet data, including display of values in percentages, fractions, pi and hexadecimal numbers.