What kinds of decimals are rational numbers?

Answer 1

terminating decimals and non-terminating repeating decimals are considered rational numbers.

pi is an example of an irrational number. this is the ratio of the circumference of a circle over the diameter

the value of pi is 3.1416....

it is non terminating and non-repeating, therefore it is considered as an irrational nimber

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Answer 2

There are two kinds of decimals that are rational: terminating and repeating. Terminating decimals are simply decimals that end. For example, the numbers after the decimal point for 3.14, 5.5, and 424.827598273957 don't continue on forever; i.e. they terminate. Repeating decimals differ from terminating decimals in that the numbers after the decimal point continue on forever. For example, the numbers 3.333333333..., 10.010101010101..., and .0356811111111111..., where the "...'s" mean that the numbers continue on indefinitely, are all repeating decimals. The reason why both of these types of decimals are considered rational is because both types can also be expressed as a fraction of two integers. Non-repeating decimals, such as pi and the square root of two, can't be expressed as a fraction of two integers, and so therefore are irrational.

Answer 3

Terminating or infinitely recurring.