Question

Use prime factorization to find the least common multiple of 120 and 252.

Answer 1

120=
2*60=
2*2*30=
2*2*2*15=
2*2*2*3*5

Answer 2

Now find the factorization of 252 in a similar way, go!

Answer 3

2520 is lcm

Answer 4

can you give me the first one please? how do you start it?

Answer 5

use upside down division. much easier.

Answer 6

2-120 252
2-60 126
3- 30 63
10 21
2*2*3*10*21=2520

Answer 7

find prime factors of both numbers. then keep going until you can't and multiply the factors with the last pair of numbers on bottom.

Answer 8

works with more than 2 numbers as well

Answer 9

its 252 not 2520

Answer 10

the lcm is 2520 dumbo. look it up on the internet. i'm right stupid.

Answer 11

um? get off of here please?

Answer 12

Ok, let's do it my way.

Answer 13

thank you

Answer 14

your way is harder.

Answer 15

nona18 im sorry im not good with this and being mean about it isnt going to help anyone.

Answer 16

sorry just use my directions and by the way, prime factorization for 252 is 2 2 3 3 7

Answer 17

To find the factorization of 252 start dividing by 2 as long as you can:
252=
2*126=
2*2*63

So now you can't divide by 2 anymore, and you move one to next prime: 3
2*2*63=
2*2*3*21=
2*2*3*3*7

And there's the factorization, because 2,3 and 7 are all prime.

Answer 18

thank you so much thomas! you're soo helpful!

Answer 19

Now to find the lcm.

Answer 20

i got that part

Answer 21

thanks!

Answer 22

Al right then, you're welcome.

Answer 23

i really appreciate it thomas9 thank you