Explore decimal fractions to represent and connect fractions and decimals. Represent fractions as parts of a set using the decimal fraction one-tenth (0.1). Practice reading decimals. Explore mixed ...

NPR's Scott Simon talks to math historian Glen Van Brummelen about his finding that the decimal point appeared in the 1440s, earlier than thought. How did the decimal point come to be? - the dot that ...

Represent fractions as parts of a set using the decimal fraction one-hundredth (0.01). Practice reading and writing decimals. Explore mixed fractions and decimals. Compare mixed decimals. Understand ...

Speaker: Not all numbers are whole numbers. Decimals are numbers that are between two whole numbers. So 1.4 is between 1 and 2. A decimal that starts with a 0 before the decimal point is less than 1.

These are decimal numbers, and dots above some of the digits make them recurring decimals. One dot means the digit under it repeats infinitely. In other words, it goes on forever (and ever and ever).