This notation introduces uncertainty as to which digits should be repeated and even whether repetition is occurring at all, since such ellipses are also employed for irrational numbers; {{pi}}, for example, can be represented as 3.14159....

In English, there are various ways to read repeating decimals aloud. For example, 1.2 may be read "one point two repeating three four", "one point two repeated three four", "one point two recurring three four", "one point two repetend