what is the easiest simplest way to find the gcf of bigger more difficult numbers for example im having a hard time finding gcf for 46 and 1000

Question

anonymous · Answer

I would use upside down division.

anonymous · Answer

You could do prime factorization using factor trees, but I find that to be confusing and messy.

anonymous · Answer

$2|\underline{46~~~1000}$
$~~~23~~~~~500$
The GCF is the numbers on the left multiplied together.(In this case there is only 1 #)
The LCM is the numbers on the left and bottom multiplied together.
This way you don't have to find the GCF right away, just find a factor.

anonymous · Answer

Danica McKellar has written some great books on learning high school mathematics. This method came from one of them.