A repeating decimal, also called recurring decimal, is a decimal number in which a digit or a set of digits repeats infinitely or without end.
For example, the decimal number 6.333333333 is a repeating decimal.
6.333333333 has only 1 digit that repeats infinitely and that digit is 3.
The decimal number 0.2525252525 has a set of two digits that repeats without end and the set is 25.
The decimal number 4.316316316316 has a set of three digits that repeats without end and the set is 316.
When writing a repeating decimal, a bar is usually placed over the repeating portion.For example, you could write
Can you identify the repeating digit(s) for the following repeating decimals?
Recognizing a repeating decimal can be tricky as you may have noticed with the five examples above.