Introduction to Decimal Calculations

An image of very old US currency bills, the front and back of a $20 bill


In [latex]1784[/latex], Thomas Jefferson proposed a decimal currency system for the United States based on the Spanish dollar, with coins for [latex]10[/latex] dollars, [latex]1[/latex] dollar, 1⁄10 dollar, and  1⁄100 dollar. One argument he advanced in favor of this system was that the 1⁄100-dollar coin would be similar in value to existing copper coins. The initial currency of the United States was minted in [latex]1792[/latex] with the dollar being equal to [latex]100[/latex] cents. Working with decimals is essential when calculating or analyzing most currency data, whether it be from historical or modern times!


Did you have an idea for improving this content? We’d love your input.

Improve this pageLearn More