A terminating decimal, also called a terminating decimal expansion, is a decimal expansion whose digits are eventually all zero
after the decimal point. For example, 
terminates, whereas 
does not. A rational
number 
written as a reduced fraction has a terminating
decimal expansion iff the prime
factors of 
are only 2 and 5.
Terminating Decimal
See also
Binary Expansion, Decimal Expansion, Rational Number, Repeating DecimalExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Terminating Decimal." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/TerminatingDecimal.html