XP Math Games Arcade

11-29-2011

How do you find the Least Common Multiple of 36, 60, and 135 using Prime Factorization?

HELP!!!!!!!!!!!!!!!

Mr. Hui · 11-29-2011

First you need to find the prime factorization of each number. You can use a factor tree to organize your factors.

Factors of

Code:

 36: 2 x 2 x 3 x 3
 60: 2 x 2 x 3 x         5
135:         3 x 3 x 3 x 5

* Note how the prime factors are neatly lined up.

The LCM is 2 x 2 x 3 x 3 x 3 x 5 = 540.

11-29-2011

Thank you. I just finished that problem a few minutes ago and that's the answer I got. Is the Greatest Common Factor for those numbers 180?

Mr. Hui · 11-29-2011

No, the GCF of 36, 60, and 135 is 3.

11-29-2011

Oh. That's what I had as my answer before but I changed it.

**jimjim** · 11-30-2011

smarty pants.

i hate lcm its too much work

**avleen kaur** · 02-19-2012

36: 2 x 2 x 3 x 3
60: 2 x 2 x 3 x 5
135: 3 x 3 x 3 x 5

The LCM is 2 x 2 x 3 x 3 x 3 x 5 = 540

**avleen kaur** · 02-24-2012

Quote:

Originally Posted by Jonathan W

How do you find the Least Common Multiple of 36, 60, and 135 using Prime Factorization?

HELP!!!!!!!!!!!!!!!

36: 2 x 2 x 3 x 3
60: 2 x 2 x 3 x 5
135: 3 x 3 x 3 x 5

The LCM is 2 x 2 x 3 x 3 x 3 x 5 = 540

11-29-2011	#1
Jonathan W Guest Posts: n/a	Need Help With LCM How do you find the Least Common Multiple of 36, 60, and 135 using Prime Factorization? HELP!!!!!!!!!!!!!!!

11-29-2011	#2
Mr. Hui Join Date: Mar 2005 Posts: 10,609	First you need to find the prime factorization of each number. You can use a factor tree to organize your factors. Factors of Code: 36: 2 x 2 x 3 x 3 60: 2 x 2 x 3 x 5 135: 3 x 3 x 3 x 5 * Note how the prime factors are neatly lined up. The LCM is 2 x 2 x 3 x 3 x 3 x 5 = 540. __________________ Do Math and you can do Anything!

11-29-2011	#4
Mr. Hui Join Date: Mar 2005 Posts: 10,609	No, the GCF of 36, 60, and 135 is 3. __________________ Do Math and you can do Anything!

11-30-2011	#6
jimjim Join Date: May 2009 Posts: 370	smarty pants. i hate lcm its too much work __________________ Everything that shines ain't a diamond Tomorrow is a gift that ain't promised Nobody's perfect, we all need alignments And things are understood more with timing live by these words and you'll get far

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Common Core Math Alignment

02-19-2012	#7
avleen kaur Join Date: Apr 2011 Posts: 84	36: 2 x 2 x 3 x 3 60: 2 x 2 x 3 x 5 135: 3 x 3 x 3 x 5 The LCM is 2 x 2 x 3 x 3 x 3 x 5 = 540