The ROUNDDOWN function in Microsoft Excel is a function that rounds a number down to a specified number of decimal places. This function is useful for formatting numbers and making them easier to read and understand.

To use the ROUNDDOWN function, follow these steps:

- Open Microsoft Excel and select the cell where you want the rounded number to appear.
- Type the following formula into the cell: =ROUNDDOWN(number, num_digits)
- Replace “number” with the number that you want to round.
- Replace “num_digits” with the number of decimal places that you want to round the number down to. If you want to round the number down to the nearest whole number, you can omit the “num_digits” argument.
- Press Enter to see the result.

The ROUNDDOWN function always rounds numbers down, regardless of their value. For example, if a number is halfway between two whole numbers, the ROUNDDOWN function will round it down to the lower number.

You can also use the ROUND and ROUNDUP functions to round a number to the nearest whole number, or up to a specified number of decimal places, respectively.

The ROUNDDOWN function is a very useful tool for formatting numbers and making them easier to read and understand. You can use it to round numbers down to a specified number of decimal places, or to the nearest whole number.

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