RE : Re: [Math4u] 26 - 14 : 2 x 3 + 4² = ?

hi,

 

  I don't know why you change the (+) to (x)?

 

  the expression is :

26 – 14 : 2 x 3 + 4² = ?

the colon here means division.

you can rewrite the expression as :

26 – 14 / 2 x 3 + 4² = ?

http://www.atadri.com/math/order.html

 

 

Sbkidde@aol.com a écrit :

Making the order of ops exponent, division (left to right), multiplication then subtraction?

 

26 - 14 : 2 x 16 =

26 - 7 x 16 =
26 - 112 =

             = -86

 

If the colon means division, that would make a first for me...as far as I can remember.

 

I recall seeing a colon used in ratios but, ratios are not usually used in order of operation problems. Thus, the use of a colon in this kind of a problem would present as a kind of an anomaly.

If it represents a ratio in the problem, I think that it needs to be left in ratio form.

 

26 - 14 : 2 x 16
12 : 32 or 3 : 8.

sbk

 

In a message dated 11/23/2007 8:08:10 P.M. Eastern Standard Time, vinaire@yahoo.com writes:

Division, I think.

V

----- Original Message ----
From: "Sbkidde@aol.com" <Sbkidde@aol.com>
To: Math4u@yahoogroups.com
Sent: Friday, November 23, 2007 3:42:39 PM
Subject: Re: [Math4u] 26 - 14 : 2 x 3 + 4² = ?

So what does the colon mean?

 

sbk

 

In a message dated 11/23/2007 1:30:27 P.M. Eastern Standard Time, brianejensen@ prodigy.net writes:

From: Math4u@yahoogroups. com [mailto:Math4u@ yahoogroups. com] O n Behalf Of atadricourses
Sent: 23 November 2007 13:20
To: Math4u@yahoogroups. com
Subject: [Math4u] 26 â€" 14 : 2 x 3 + 4² = ?

Please Excuse My Dear Aunt Sally

26 â€" 14 : 2 x 3 + 4² = ?

It was surprising that so many people, even those who thought they were math persons, answered this question incorrectly; 90% of them gave the wrong answer.

         

how to organize your operations !   What do the words Please Excuse My Dear Aunt Sally refer to?This is an acronym: use it to help you retain the order of operations. The words stand for : Parenthesis, Exponents, Multiply, Divide, Add, Subtract   In Mathematics, when there is more than one operation involved, you must use the correct order of operations.   Expressions involving one operation          12 + 5 = 17    here you have only one operation (+)           35 x 3 = 105  here you have only one operation(x)   what about if you have two operations? for example :14 +5 x 10 =? are you going to solve it as : 14 + 5 =19 and then multiply 19x10 =190?                                                    or are you going to solve it as : 5 x 10 =50 and then add 14 +50 = 64 ?   Expressions involving two operations   14 + 5 x 10 =?   Following the acronym Please Excuse My Dear Aunt Sally or(PEMDAS) the expression 14 + 5 X 10 has two operations addition and multiplication right? and in the acronym M(in My)which refers to multiplication comes before A(in Aunt)which refers to addition.  so  14+5 x10 = 64                                       (multiply before add)     Expressions involving more than two operations   7 x 5 + 8/8 â€"12 x 2 =? (7x5=35 and 8/8 =1 and 12x2=24) 35 + 1â€"24 =12 PEMDAS Atadri Bodor 325 rue joliette Longueiul, Qc,J4H2G6 Canada E-mail: info@atadri. com

 

---

Check out AOL Money Finance's list of the hottest products and top money wasters of 2007.

 

 

 

http://www.atadri.com/didyouknow.html

---

Ne gardez plus qu'une seule adresse mail ! Copiez vos mails vers Yahoo! Mail __._,_.___

Your email settings: Individual Email|Traditional
Change settings via the Web (Yahoo! ID required)
Change settings via email: Switch delivery to Daily Digest | Switch to Fully Featured
Visit Your Group | Yahoo! Groups Terms of Use | Unsubscribe

__,_._,___