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rdennington

Find the greatest common factor of 270 and 360

  • one year ago
  • one year ago

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  1. waterineyes
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    Divide 360 by 270 and get the remainder first...

    • one year ago
  2. rdennington
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    ok, 1.3

    • one year ago
  3. waterineyes
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    Or second thing you can do is to take prime factors of 270 and 360..

    • one year ago
  4. satellite73
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    they are both fairly obviously divisible by 10 it is also clear that they are both divisible by 9? 27 is, as is 36 so we know they are both divisible by 90

    • one year ago
  5. rdennington
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    i have to break it down.

    • one year ago
  6. rdennington
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    into exponents.

    • one year ago
  7. satellite73
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    therefore the greatest common factor is at least 90 \[360\div 90=4,270/90=3\] so 90 is the answer

    • one year ago
  8. cwrw238
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    i did this one a while ago find prime factors and look for common values 270 = 2*3*3*3*5 360 = 2*2*2*3*3*5 GCF = 2*3*3*5 = 90

    • one year ago
  9. rdennington
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    "(Give the answer in the numerical form in the top box and in exponential form by filling in the boxes for exponents.)"

    • one year ago
  10. waterineyes
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    No. do not divide it properly see do like this: |dw:1340813241962:dw| Get the remainder 90?? This is not the answer yet.. Now divide the divisor 270 by the remainder ie 90... If it is wholly divisible then 90 is the GCF...

    • one year ago
  11. satellite73
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    really? sometimes you need to do that if it is not completely obvious, but in this case that is a total waste of time. they are both divisible by 90 from your eyeballs

    • one year ago
  12. cwrw238
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    thats 2*3^2 * 5

    • one year ago
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