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).

Converting between fractions, decimals and percentages is a useful problem-solving skill. The data can be more easily ordered by size when written in the same format. Calculations often give a decimal ...

Most scientific calculators have a dedicated fraction function that allows you to input fractions directly. To use this function, input the numerator followed by the fraction key (usually labeled as ...