Finding a number's place value | Arithmetic properties | Pre-Algebra | Khan Academy

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When finding the place value of a particular number, it helps to write out exactly what the number means. Listen as we explain in this video.

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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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[youssefmartinez]

Sal!! You made this for GED students? I can't thank you enough... I dropped out of school in the sixth grade when we lost our house because the economy crashed. I was homeless for three years, and then I had to work in the oilfield to take care of my dad (who was very sick, but is now healthy). So, I am determined to get into a great college with a 6th grade education... I have honors in my GED so far, and I am now undertaking the math section. Thank you Sal...

[starponys]

Your place value videos seem the teaching tool to complement my own math videos (including a video that ties place value to algebra).

[heroable]

THANIK YOU FOR MAKEINING SUB TITLE IN ARABIC

[reemrizwan]

khan academy is the best i am going to 100 percent ace 4th grade this year!

[cylurian]

Anyone who says "and" in 4356, I remember Bob Barker. There is no decimal in 4356 therefore we don't say and.

[LoveingTT]

I'm taking my ged in 3 days, so I'm doing a marathon of these 200 videos. Thanks sal.

[strawberrypaw]

thank you but what about thousandths the one that end with TH

[demonarrow]

Why do fifth graders learn about this stuff when its very easy for some people to understand

[Esther-knfr]

You chang my math now I have all A+ on my test your the bast

[aandjay]

I'm trying to teach myself math going into grade 11 academic in a month yet I don't know much lol its been almost 5 years and math was never my strong suit

[mercedrock]

This was very helpful with helping my child with their homework! It’s been a while since I did this lol

[_Wes__]

Dude, he's got like 3300 videos, and more than half a million subscribers. There is no way for him to reply to comments and still have time to make more videos. It's just not possible with a channel of this size.

[eifellerheizpagayon]

thanks for uploading the vid helped me for home school

[manusiadidunia]

haihh, do you do any discrete structure tuto??

[VaalaXD]

thank you so much you're very helpful

[theholybible]

Why do teachers treat fifth graders like kids were young teens but old children

[barbaragarcia]

this is a really fast video I've never seen a video this fast pretty cool I don't know how to make a video

[horrork]

what software do you use to draw like that PLS respond :)

[TheAAbck]

khan how come u never reply or talk to ur audience

[mrsrachelmoore]

I like this and love Khan Academy videos but make sure you don't say "and" in a number unless there is a decimal! Please! (Obsessed teacher here)