Question

Is 1/5 a rational number?? I need help ASAP

Answer 1

$\frac{1}{5}$ is a rational number because it can be put as a fraction. An Irrational numbers cannot be a fraction since they are continuous (unless you estimate/round them up)  

Answer 2

1/5 is a rational number because when you convert it into decimal form, it is a terminal decimal; 0.2. 
Hope that answered your question.