Page 1 of 1 [ 2 posts ]
 Print view Previous topic | Next topic
Author Message
 Post subject: LCM drillPosted: Tue Nov 16, 2010 6:45 pm

Joined: Tue Nov 16, 2010 5:56 pm
Posts: 5
In step 2 of the 3-step procedure for finding the LCM on p.37 of Math Essentials, it says: "take each prime factor to the highest power". How is "highest power" determined?

For example, in Q.2 on p.38, I identify the prime factors of each of 8, 10 and 12 as:

8: 2 . 2. 2
10: 2 . 5
12: 2 . 2 . 3

We arrive at the answer of 120 by multiplying 8 x 3 x 5. I assume the "highest power" of the prime factor 2 in the above example means 2^3 for the integer 8? (For the integer 12, it would be 2^4. For the integer 32 it would be 2^5).

Is this the correct interpretation?

Top

 Post subject: Re: LCM drillPosted: Tue Nov 16, 2010 6:54 pm

Joined: Thu Feb 12, 2009 6:32 pm
Posts: 497
You are correct (except 16 would be 2^4 12 would be 3 * 2^2)

For the LCM of 8, 10, 12,

we need 2^3 (since 2^3 = 8)

... 5 (since 10 = 5*2)

and .. 3 (since 12 = 3*2*2)

2^3 * 5 * 3 = 120

-- Veritas Help

Top

 Display posts from previous: All posts1 day7 days2 weeks1 month3 months6 months1 year Sort by AuthorPost timeSubject AscendingDescending
 Page 1 of 1 [ 2 posts ]

 All times are UTC - 8 hours [ DST ]

#### Who is online

Users browsing this forum: No registered users and 2 guests

 You cannot post new topics in this forumYou cannot reply to topics in this forumYou cannot edit your posts in this forumYou cannot delete your posts in this forumYou cannot post attachments in this forum

 Search for: