Question

Why is 0.71875 a rational number

Answer 1

Answer:

Because it is terminating.

Step-by-step explanation:

0.71875 is rational because it is terminating (has a clear end). If it were a bunch of random numbers that never ended, then it would be irrational.

Answer 2

Answer:

It can be written as a fraction with integer numerals.

Step-by-step explanation:

One easy rule to follow is 'Can it be written as a fraction with integer denominators and numerators?'. If so, then yes, it is rational.

Something like pi, which can not be represented as a fraction is not rational.