Posted by **Steve** on Friday, September 27, 2013 at 7:30pm.

What do you do to check if a number is rational or irrational? In the explanation use a rational and irrational number.

- Math -
**Steve**, Saturday, September 28, 2013 at 12:12am
if it's an integer, it's obviously rational: 3,-10

if it's a terminating decimal, it's obviously rational 12.3978

If it's a repeating decimal, it's rational:

12.27__8963__ = 12.27 + 8963/1000000

Otherwise it's irrational:

√2 = 1.41421356...

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