Prime Factorization: factor trees and ladder method

[@nicolepeters5627]

This video was very helpful and easy to understand. Thank you!

[@davesmathk-12]

And thank you for watching!

[@lalanalertsmitivanta4019]

Thank you so much, Dave.

[@UltraWolf88]

Thanks a lot , it was easy to understand, THANK YOU.

[@davesmathk-12]

thank you too!

[@darla_1146]

This helped my last minute studying

[@davesmathk-12]

Glad it helped!

[@darla_1146]

Dave'sMath K-12 thanks so much again

[@darla_1146]

Dave'sMath K-12 I would have gotten a very low grade but this helped

[@veve2484]

Hello, fellow procrastinator.

[@davesmathk-12]

Glad I could help!

[@2131-g2z]

At 3:48, I didn't know which 2 numbers made 91, can you tell me how i can find out?

[@davesmathk-12]

Hello, great question! I have prime numbers to 100 posted near my computer. First, I quickly checked prime numbers to make sure that 91 wasn't prime. Then I took a guess at a few numbers in my head-- then came up with the right answer: 7x13=91. Good luck!

[@2131-g2z]

Ohh, thank you!!!

[@2131-g2z]

Dave,What If I had 3 as my prime number and on the other side I had 125 and I know for a fact 125 is not a prime number because you can do 5x5x5 and the only way you can get 3 is by doing 1.5 x 2 and I may reply late because i will be doing my cats test, thank you

[@davesmathk-12]

Hmmm..depends on the composite number you start out with to find prime factors. Try thinking of multiplying all your prime numbers to get to the composite number. Prime numbers for 125 are 5x5x5 or if you have 3x5x5x5 then your beginning composite number is 375.

[@2131-g2z]

Oh okay, Thanks I subscribed and liked your video!

[@gaby4n6]

good video. For the ladder, how do you know which numbers to plug in on the side though? like what if two numbers go into a digit then which do you choose?

[@davesmathk-12]

Hello, start with the lowest prime number that will divide evenly into your composite number: 2, 3, 5, 7 etc. --I meant to say that in the video--..."start with the lowest prime number."

[@pawarbn7981]

Bad

[@avajonesie]

Thanks Dave you have a new follower

[@davesmathk-12]

You're welcome!Thank you

[@davesmathk-12]

thank you!

[@cheerynboi9356]

This really helps me in my study!

[@davesmathk-12]

Great!

[@vourtical5858]

this helped bc I wasn’t paying attention in math 😂😂✌️

[@shaneoneal2053]

Smae

[@shaneoneal2053]

Same

[@davesmathk-12]

I'm glad you liked it. Math is fun!

[@jingfernando6256]

My Favorite is: 2:15

[@davesmathk-12]

Thank you!

[@davesmathk-12]

Great!

[@nitalosh8582]

this video was very helpful ty ✨ i have tomorrow a test (final)

[@davesmathk-12]

Good Luck! I hope you do well!

[@jimmyblazo4706]

Thank you because ihave exam tomorrow so ican review it

[@davesmathk-12]

Perfect!

[@ashokyadav6505]

It help me too much

[@davesmathk-12]

Glad I could help!

[@jennylora4219]

Nice video

[@davesmathk-12]

Thank you for watching!

[@user-cm9uh6sj7n]

nice video

[@davesmathk-12]

Thank you for watching!

[@dedofre7784]

full HD 4K

[@davesmathk-12]

Super!

[@anamikasatyam1096]

very nice

[@davesmathk-12]

Thank you!

[@patienceikese1068]

Your voice was too low