Decimals are a way of representing numbers that are not whole. When 1 is divided into 10 equal parts, they are called tenths. Tenths can be represented as decimals: One tenth = \( \frac{1}{10} \) = ...

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).