Answer:
Yes
Step-by-step explanation:
Yes terminating and repeating decimals are rational numbers.
This is a terminating decimal. It ends, so it is rational.
Anything that can be written as a fraction where the top and bottom are integers is rational.
Some examples:
-1 =-1/1
5 =5/1
5.23 =523/100
.3333333333333333333333333333333333333....=1/3
1 2/3 =5/3
Since there seems to be more that need convincing, the number 128.439 can be written as 128439/1000
that is a fraction where the top and bottom are integers
so 128.439 is rational
