Order of operations, more examples | Linear equations | Algebra I | Khan Academy

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Complete a series of order of operations problems, including expressions with variables.

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Algebra I on Khan Academy: Algebra is the language through which we describe patterns. Think of it as a shorthand, of sorts. As opposed to having to do something over and over again, algebra gives you a simple way to express that repetitive process. It's also seen as a "gatekeeper" subject. Once you achieve an understanding of algebra, the higher-level math subjects become accessible to you. Without it, it's impossible to move forward. It's used by people with lots of different jobs, like carpentry, engineering, and fashion design. In these tutorials, we'll cover a lot of ground. Some of the topics include linear equations, linear inequalities, linear functions, systems of equations, factoring expressions, quadratic expressions, exponents, functions, and ratios.

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Please Excuse My Dear Aunt Sally PEMDAS which is parentheses exponents multiplication division add subtract(thats the way i learned it) great vid!

EatHotLeadEver
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LOL @ 11:55, even Sal doubts himself sometimes while doing math.

Macdiz
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@tanhuiz an exponent for example is this.4 ^3 . the 3 would be at the spot were you write the st in 1st. the number in that spot (3) means multiply the base (4) 3 times. it would look like this. 4*4*4=64

jonjonjon
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@hifhif123 alot of british and english peole use bomdas but in america were taught pemdas which means parantheses exponents multiplilcation and division adition aand subtraction.well thats the wa they taughtme in my school

BlueEagleO
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4. c) is actually a misprint and is impossible.

pietato
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To be kinda honest teachers are forgetting about Khan Academy which they don't tell kids about it anymore.

_simply.joshey
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The problems are faded on the left.  I cant see them well.

braxtongreenwell
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Pemdas sounds like a brand of asian socks...

HikikomoriDev
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Teacher teacher can you teach me ? =) that's the song from the movie .

dragonworld
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im not even in school and im watching this

vikramrulesrox
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Also that voice sounds a bit robotic to me

mason