what is are some free websites that can give me rational and irrational practice?

Try these.

http://www.google.com/search?source=ig&hl=en&rlz=1G1GGLQ_ENUS308&q=math+rational+and+irrational+practice&btnG=Google+Search&aq=f&aqi=&aql=&oq=&gs_rfai=CqnXvIDqRTPSAMI-GNIu1wMsBAAAAqgQFT9DOC3k