Tag Archives: factor

LCM and GCF – And Something Really Cool

In a previous post, we learned that you don’t have to use a LCM (least common multiple) to find a common denominator to add fractions. In another post, we learned that you can use primes instead of the GCF (greatest common factor) to reduce fractions. And now I’m going to demonstrate that finding the LCM… Continue Reading →

How to Use Prime Factoring to Win Friends and Influence People

Alright, you might not win friends with this, but the more you can do arithmetic in your head… well… okay, you can’t influence people with it either. Regardless, it’s handy to know and helps with multiplication. Yesterday I posted a couple of videos about factoring numbers into primes. Now it’s time to put those to work.… Continue Reading →