Number sets 1 | Fractions | Pre-Algebra | Khan Academy

Number Sets 1

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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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[WolfgangKaipz]

congratulations Salman!
by the way, if you have the time and think is time, could you do a few videos on electrical circuits analysis and basic components such as capacitors, diodes, transistors or about how to calculate voltage at certain points of the circuit when resistances appear in series.
thanks for all!

[keshabkaflay]

Very helpful to teach my daughter. Thanks!!

[Englishstudent]

This is very helpful and clear.
That is the teacher i want

[Owner]

@Arlemagne it would since the reals are a subset of the complex

[btkw]

Please return to the astronomy playlist :D

[adilmohak]

so helpful, thanks but What is the playlist for this video?

[Arlemagne]

What about the Complex Numbers? Are you going to do the mnemonic Nine Zulu Queens Ruled China?

[madah]

@webmastertool it must be represented as a fraction of integers and pi is not an integer I mean for it to be rational it must be represented as p/q where both p and q are integers and q =! 0

[bhoomipandya]

How to solve this que? Express in the form of p/a whir p n a are integers and a is not = o 1. 0.6

[madivalappamelavanki]

Please make your voice little bit clear

[Supernova]

how you know all this to make almost 2000 vids ? all by your self ?

[wookiemaster]

The science videos are so much better...

[komalgupta]

Please make your voice little bit clear