Prime factorization | Factors and multiples | Pre-Algebra | Khan Academy

Prime Factorization

Missed the previous lesson?

Pre-Algebra on Khan Academy: No way, this isn't your run of the mill arithmetic. This is Pre-algebra. You're about to play with the professionals. Think of pre-algebra as a runway. You're the airplane and algebra is your sunny vacation destination. Without the runway you're not going anywhere. Seriously, the foundation for all higher mathematics is laid with many of the concepts that we will introduce to you here: negative numbers, absolute value, factors, multiples, decimals, and fractions to name a few. So buckle up and move your seat into the upright position. We're about to take off!

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[annareal]

My teacher is horrible at explanation. Thank you for this helpful video!!

[applejuice]

Its videos like this that help people pass a test.

[xanderia]

its been nearly 8
years since its upload and still the real mvp

[ihatemath]

Your videos saved me when i was going through math in college. love the examples! Hoping my videos can help people as much as yours!

[lmnd_brn]

Thank you! I need help with my homework and my parents can’t help thank you so much! Also you have a new subscriber 😁

[skylee]

Thank You very much! I'm in online school and I have trouble in Math all the time! Your videos are very helpful!

[rajal]

I can’t believe u made my dout clear just in 4 min

[cyan]

Thank you. My teacher copies everything from the book.

[uractuallyreadingthisandyo]

Thx so much I’m in 2020 and my teacher is still teaching this method

[hugomudu]

Cheers Sir for helping on this and hope you have a nice day :)

[holiday]

Havent taken a math course in about 9 years and this helped me. Many thanks to you.

[sugacookie_filmsxo_]

I was absent the day my teacher taught this, thanks 😊

[michelleb]

Thanks so much. This is very helpful in teaching my child who’s homeschooled🙏

[Soha_an.]

Teacher made me watch this. Math vids will be in my rec now. Yay.

[OneTruthInc]

Whoa!!! that was fun... a complete first!!

[Discotraxx]

Awesome I'm in college and I suck and this stff I'm taking a pre algebra like class but all this helps

[CasaPortale]

Thank you very much for refreshing my memory! :)
I am surprised that You added 7+5=12 and concluded that 75 is divisible by something. What is the idea behind that, and do you explain it in another video?
Thanks, and Greentings from Berlin, Germany.

[UnitedHairlines]

Thank u so much that helped me a lot I hate those concepts that just slip your brain as u get older

[krakadile]

Hi, I am so happy to know you are doing this amazing work. Thank you. I was wondering if you have any videos showing how to find prime factors in the subtraction of multiple fractions problems involving more than 3 or 4 fractions?

[memebros]

Love your vids it helps me understand prime factorization😀🙏