## Thursday, March 12, 2009

### Please Excuse My Dear Aunt Sally

and TEACH ME THE PROPER ORDER OF OPERATIONS.

So I never heard of this mnemonic until today when a math teacher buddy of mine shared it.

I had decided to teach my niece about order of operations, seeing as how she said "Hours of operation?" when I asked her if she had heard of it.

Anyhow, I came to a problem when I realized that 3÷3*3 is either 1/3 or 3, depending on which operation you do first. I was like "damn, is there a rule for that?"

Like, in practice it never comes up since you likely won't see a division sign in college and the fractions make the division completely obvious as to when it happens.

Anyhow, I looked it up, and with a chain of division and multiplication you just do it left to right. That's fine, it makes sense. Cool.

Then my math teacher buddy gets back with the "Please Excuse My Dear Aunt Sally" mnemonic, and I was like "wtf that's wrong." And then he pointed out that you then have to say that multiplication and division are the same (my feeling as well) and subtraction and addition are the same (agreement here), and in those cases you just do it left to right.

Anyhow, I think that this mnemonic is retarded since there are only 4 classes of things and that's trivial to remember anyhow. Parens, exponents, multiplication, and addition are all we need to talk about. PEMA. Please Excuse My Aunt, if anything. Then Equivalent operations are done left to right, and multiplication is equivalent to division, which is not tough to explain since it's just a multiplication by the inverse, and subtraction is the same as addition - just adding a negative.

PEMA forever.

Anonymous said...

I don’t usually reply to posts but I will in this case. I’ve been experiencing this very same problem with a new WordPress installation of mine. I’ve spent weeks calibrating and getting it ready when all of a sudden… I cannot delete any content. It’s a workaround that, although isn’t perfect, does the trick so thanks! I really hope this problem gets solved properly asap.

Anonymous said...

It agree, this brilliant idea is necessary just by the way

Anonymous said...

I don’t usually reply to posts but I will in this case. I’ve been experiencing this very same problem with a new WordPress installation of mine. I’ve spent weeks calibrating and getting it ready when all of a sudden… I cannot delete any content. It’s a workaround that, although isn’t perfect, does the trick so thanks! I really hope this problem gets solved properly asap.

Anonymous said...

I wish not approve on it. I regard as nice post. Specially the title attracted me to study the whole story.

Anonymous said...

Good dispatch and this fill someone in on helped me alot in my college assignement. Say thank you you seeking your information.

Anonymous said...

[url=http://vegasonlines.net/casino-francais.html]the palm casino [/url]
[url=http://vegasonlines.net/casino-poker-com.html]action online casino [/url]
[url=http://vegasonlines.net/imperial-palace-las-vegas-casino.html]cannes brasserie du casino [/url]
[url=http://vegasonlines.net/casino-sign-up-bonus.html]ww youtube com baile casino [/url]
[url=http://vegasonlines.net/casino-in-indiana.html]portofino casino [/url]
[url=http://vegasonlines.net/casino-brooks-california.html]truco tragamonedas casino [/url]
[url=http://vegasonlines.net/deerfoot-inn-casino-calgary.html]juegos de casino gratis para jugar [/url]
[url=http://vegasonlines.net/casino-flights-from-lewiston-idaho.html]tropicanan casino atlantic city [/url]
[url=http://arthurbharrisiii.com/members/online_2D00_casino.aspx]casino 150 [/url]
[url=http://vegasonlines.net/century-casino-edmonton.html]casino celaya guanajuato [/url]
[url=http://vegasonlines.net/montreal-casino.html]casino paris resort vegas [/url]
[url=http://vegasonlines.net/chukchansi-casino.html]jackpot casino [/url]
[url=http://vegasonlines.net/giochi-casino-gratis.html]jugar linea no casino [/url]
[url=http://vegasonlines.net/online-casino-games-com.html]control fiscal materia bingo casino [/url]
casino colonia uruguay
[b]mgm casino[/b]
jeux casino sur net
internet casino gambling uk
[b]harrahs casino north carolina[/b]
casino cl
[u]curacao marriott beach resort emerald casino[/u]
portal casino linea
juegos de casino virtual
[b]loteria y casinos de la provincia de buenos aires[/b]
best online casino directory

Anonymous said...

[u][b]Xrumer[/b][/u]

[b]Xrumer SEO Professionals

As Xrumer experts, we secure been using [url=http://www.xrumer-seo.com]Xrumer[/url] quest of a long time now and know how to harness the titanic power of Xrumer and build it into a Banknotes machine.

We also provide the cheapest prices on the market. Diverse competitors devise expect 2x or temperate 3x and a destiny of the continuously 5x what we charge you. But we maintain in providing great help at a debilitated affordable rate. The entire something of purchasing Xrumer blasts is because it is a cheaper substitute to buying Xrumer. So we aim to keep that contemplating in recollection and yield you with the cheapest censure possible.

Not just do we be suffering with the most successfully prices but our turnaround in the good old days b simultaneously for the treatment of your Xrumer posting is super fast. We will take your posting done before you discern it.

We also produce you with a ample log of loaded posts on different forums. So that you can see for yourself the power of Xrumer and how we be struck by harnessed it to help your site.[/b]

[b]Search Engine Optimization

Using Xrumer you can trust to apprehend thousands upon thousands of backlinks in behalf of your site. Many of the forums that your Location you settle upon be posted on get exalted PageRank. Having your tie-in on these sites can really serve establish up some top-grade dignity recoil from links and genuinely aid your Alexa Rating and Google PageRank rating through the roof.

This is making your put more and more popular. And with this developing in celebrity as familiarly as PageRank you can think to lead your site definitely filthy gamy in those Search Mechanism Results.
Conveyance

The amount of conveyance that can be obtained aside harnessing the power of Xrumer is enormous. You are publishing your site to tens of thousands of forums. With our higher packages you may even be publishing your locality to HUNDREDS of THOUSANDS of forums. Ponder 1 collection on a in demand forum last will and testament inveterately cotton on to a leave 1000 or so views, with announce ' 100 of those people visiting your site. At once create tens of thousands of posts on fashionable forums all getting 1000 views each. Your traffic ordain go sometimes non-standard due to the roof.

These are all targeted visitors that are interested or bizarre about your site. Envision how many sales or leads you can execute with this great gang of targeted visitors. You are in fact stumbling upon a goldmine friendly to be picked and profited from.

Retain, Transport is Money.
[/b]

http://www.xrumer-seo.com

Anonymous said...

[B]NZBsRus.com[/B]

[URL=http://www.nzbsrus.com][B]NZB[/B][/URL]

Anonymous said...

Ticket Our Flagrant Prices at www.Pharmashack.com, The Primarily [b][url=http://www.pharmashack.com]Online Chemist's shatter the whistle on corrupt [/url][/b] To [url=http://www.pharmashack.com]Buy Viagra[/url] Online ! You Can also Gull Giant Deals When You [url=http://www.pharmashack.com/en/item/cialis.html]Buy Cialis[/url] and When You You [url=http://www.pharmashack.com/en/item/levitra.html]Buy Levitra[/url] Online. We Also Be subjected to a Unsurpassed Generic [url=http://www.pharmashack.com/en/item/phentermine.html]Phentermine[/url] On account of Your Regimen ! We Chuck b transfer away Pre-eminence docket [url=http://www.pharmashack.com/en/item/viagra.html]Viagra[/url] and Also [url=http://www.pharmashack.com/en/item/generic_viagra.html]Generic Viagra[/url] !

Anonymous said...

Predilection casinos? seal of okay on this advanced [url=http://www.realcazinoz.com]casino[/url] tillerman and horseplay online casino games like slots, blackjack, roulette, baccarat and more at www.realcazinoz.com .
you can also foundation our untrained [url=http://freecasinogames2010.webs.com]casino[/url] orientate at http://freecasinogames2010.webs.com and spread the discrepancy constant fabulously misled !
another unsurpassed [url=http://www.ttittancasino.com]casino spiele[/url] series of events is www.ttittancasino.com , in compensation german gamblers, petiole in magnanimous online casino bonus.

Anonymous said...

You have really great taste on catch article titles, even when you are not interested in this topic you push to read it

Anonymous said...

I really like when people are expressing their opinion and thought. So I like the way you are writing

Latest Ghana News said...

great work man this is a great post you good research and you make a great report 토토사이트

ONYX2PLAY said...

Online casino games are brilliant invention that completely transformed the field of gambling. You can opt for the best online betting agency singapore and play.

jackman10 said...

William Hill Casino, arguably the most renowned Casino on the internet - is continually releasing groundbreaking games to keep ahead of the market and attract the very top players available. One of their most recent releases, thanks to a deal signed with Marvel in 2009, is Gladiator - a 25 Line, 5 Reel Slot Machine that will appeal to new and experienced players alike. Using images and even the music from the Hollywood Film with Russell Crowe and an authentic 'Gladiatorial' feel - it is a fantastic addition to several of the Playtech brands. 온라인카지노

CasinoTop.com said...

The post is really amazing as you work hard on it by posting it in a different way. Thanks for sharing it with everyone. casino online.

Satta King said...

Great content I love it Coursework Help.

visit us:-Satta King

aaronssd said...

It is truly a well-researched content and excellent wording. I got so engaged in this material that I couldn’t wait to read. I am impressed with your work and skill. Thanks.top online casino Philippines

jackman10 said...

When you're looking for top-rated luxury transportation companies for car shipping, we are the right option in this matter. We are a car transportation company that can Cargo and freight transportation. You can trust as we take care of your car as if it was our own. Call us at (800) 392-1446!

smithseo said...

This is a good common sense article. Very helpful to one who is just finding the resouces about this part. It will certainly help educate me. Maven Sports Illustrated

smithseo said...

I wonder if this is all possible, see for yourself. Ross Levinsohn Maven

smithseo said...

ehternet cables are still the ones that i use for my home networking applications; Maven Sports Illustrated