How to Get Decimals to Line Up in Excel. If you're using Excel to calculate monetary values, then you only have to worry about two decimal places in your numbers. Aligning your numbers to the ...

This Maths article features a video and activities to learn how to add decimal numbers that have a different number of decimal places.

To multiply decimals by 10, 100, and 1000, use place value labels. Write the digits of the decimal using place value labels. Start with the first non-zero digit. To multiply by 10 move each digit ...

The decimal point appears to have been first used in the 1440s, a century and a half earlier than initially assumed.