For example, the fraction ⅓ cannot be written, because it repeats infinitely (0.33333333… etc). Is there a particular word for numbers that cannot be written directly, but must be expressed as fractions?
Learn English – What do you call a fraction that cannot be written as a finite decimal
fractionsmathematicsnumbers
Best Answer
Also Periodic decimal:
for example:
1/7 = 0.142857142857.. 1/3 = 0.3333..
Repeating decimal appears to be the most common definition according to : Ngram
Source:http://wiki.tcl.tk/3310