Rational and Irrational Numbers

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Uploaded by on Aug 10, 2008

Animation that defines & compares rational and irrational numbers

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Education

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Standard YouTube License

  • likes, 7 dislikes

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Uploader Comments (lunamath)

  • The song is Little Spanish Flea

  • 5.00037e+007 = 50,003,700 in calculator-speak (move the decimal 7 places to the right)

  • 3 + 26/100 is equal to 326/100. The goal is to verify that the value can be written as a fraction, that's why we used the improper fraction instead of the mixed number.

  • no, no, no. 21/7 is not equal to Pi. 21/7 = 3. A common APPROXIMATION of Pi is 22/7, but this is NOT exactly Pi. In fact, it is only accurate to 2 decimal places. We can approximate the value of Pi with 3, 3.14, 22/7, 3.1415927, but we can NEVER write down the exact value because it is an unending decimal.

  • song = Little Spanish Flea

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  • wow u helped me with my home work. i'm going subscribe ;)

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All Comments (176)

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  • wow i was really confused how my maths book explained it and as i looked a this video it cleared things right up, (although as i looked back in the book the explanation was almost the same). i juzz needed a hands on approach! thank thumbs up!

  • if only math was still this easy.....

  • good... very helping....... thumbs up:)))))))))

  • 5:39 turn on captions : just like life this is also an irrational number

  • U The Man....!!!!

    

  • i have a really big penis and i have a ps3

  • Thanks a lot 5*******

  • I wonder if certain fractions like 66/89 when trying to convert to a decimal would have infinate random digits with no repeating pattern which in a way would make it an irrational number but can be written as a fraction because it started out as a fraction? 66/89 = .74157303370786516853932584269­663 etc... I don't see an end or a pattern. Maybe there is one though if you go long enough. I don't know.

  • I've learnt more from you in 7 mins 24 secs , than from my maths teacher over 3 weeks .

    THANKS YOU SO MUCH , YOU'RE A LEGEND . <3

  • thanks so much i'm not confused anymore on rational and irrational thanks again

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