Posted by Celia on .
find lowest common multiple of 24,15,44=1 or none

math115 
Ms. Sue,
There's always a common multiple. One way to do this is to find the multiples of the largest number and find the smallest number that the others will go into.
44, 88, 132, 176, 220, and so on
If that doesn't work, multiply 24 * 15 * 44. 
math115 
celia,
so would it be 360

math115 
jim,
15 ad 24 go into 360 evenly. Does 44?

math115 
celia,
no would it then be 15840

math115 
jim,
You can also do it by getting the prime factors of each:
15 > 3, 5
24 > 2, 2, 2, 3
44 > 2, 2, 11
Now, your LCM must contain all the numbers from any one of those lines.
Start by selecting any line, say 15:
3, 5
Now add anything else yu need from 24:
2, 2, 2, 3, but we don't need the 3, because we have one, so now we're at:
3, 5, 2, 2, 2
44 > 2, 2, 11, but we already have two 2s in our list, so all we have to add is the 11:
3, 5, 2, 2, 2, 11
We usually rewrite this low to high, like
2, 2, 2, 3, 5, 11
So multiplying those will give your your LCM. 
math115 
celia,
1320

math115 
jim,
Yes!

math115 
celia,
Thank you!!!!!!!!!! ur awesome