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Common Core Math Question: How Does 8 + 5 = 10?
Pundit Press ^ | 10/10/14 | Aurelius

Posted on 10/10/2014 9:28:56 AM PDT by therightliveswithus

Imagine you are a student doing math work. You've gone through a number of questions, and you feel you've really got the hang of everything. Then, all of a sudden you get this question: "Tell how to make 10 when adding 8 + 5." What do you respond?

That was the problem facing a young student learning how to add using Common Core. The student responded with confusion, answering the same way most of us would: "You cannot make 10 withe [sic] 8 + 5."

The student was told he was wrong.

Underneath, his teacher wrote, "Yes you can. Take 2 from the 5 and add it to 8 (8 + 2 = 10). Then add 3." But wait, if you're adding three, it's not 10 any more... It's 13.

And why does 5 need to be broken down? Why not 8? Why not turn 8 into 5 and 3, add 5 plus 5, then add 3? Still, though, 8 + 5 will never add up to 10.

You can see the question, student answer, and teacher correction below:

Common Core Addition

(Excerpt) Read more at thepunditpress.com ...


TOPICS: Politics
KEYWORDS: commoncore; education
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To: Calvin Locke
Base 13
41 posted on 10/10/2014 10:01:28 AM PDT by Diamond (He has erected a multitude of new offices, and sent hither swarms of officers to harass our people,)
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To: therightliveswithus
Anyone in the GOP that supports Common Core (and there are some prominent names on that list) should be run out of the party. This is stupidity, plain and simple, and those that parrot this crap should be ridiculed openly and often.
42 posted on 10/10/2014 10:02:20 AM PDT by Major Matt Mason ("Journalism is dead. All news is suspect." - Noamie)
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To: dforest
I like my way better.

8+5 = 10 because I ran out of fingers so 8+5 has to be 10.

So easy!

Or:

Bo Derek is an 8

Dudley Moore is a 5

Together they made 10.

43 posted on 10/10/2014 10:02:21 AM PDT by tacticalogic
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To: therightliveswithus

The question is misleading, but this is exactly how I do math in my head all the time. It’s much easier, at least for me. But I didn’t figure the method out until I was a bit older. Is this how the Chinese teach math?


44 posted on 10/10/2014 10:03:18 AM PDT by Dr. Bogus Pachysandra (Don't touch that thing Don't let anybody touch that thing!I'm a Doctor and I won't touch that thing!)
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To: therightliveswithus

The teacher got it wrong. The correct answer is:

8 + 5 - 3 = 10. That my friends is a more correct answer than 5 - 3 + 8 = 10.

Then we have 8 + 5 - 1 - .5 + 3.6 - 2.4 - 2.7 = 10.

Am I a genius or what??? I never knew that math could be so creative!!!


45 posted on 10/10/2014 10:03:52 AM PDT by CdMGuy
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To: therightliveswithus

I begin to wonder if the idiots teach this way as they are incapable of teaching the old way. Although the old way was merely memorization via rote. It worked for lots of us here, remember flash cards? Too easy, I guess. Teachers would rather over-complicate it to justify their existence. And the only ones to pay for this idiocy will be the kids! Just like when gov’t screws up, we pay for it. Something’s got to be made to change, all the way around.


46 posted on 10/10/2014 10:05:29 AM PDT by W. (Now playing: The most inept administration in history--Jimmah Cottah beams with pride!)
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To: therightliveswithus

8 + 5 does equal 10 ...

in base 13


47 posted on 10/10/2014 10:07:23 AM PDT by sten (fighting tyranny never goes out of style)
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To: therightliveswithus

These kids are not going to be functional in society if this is what they are learning. They won’t even be able to work in fast food


48 posted on 10/10/2014 10:11:41 AM PDT by GeronL (Vote for Conservatives not for Republicans)
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To: Blood of Tyrants

These little purple penguins won’t be able to think, read, do math but they will be experts at condoms and social justice


49 posted on 10/10/2014 10:13:04 AM PDT by GeronL (Vote for Conservatives not for Republicans)
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To: therightliveswithus

It started in the seventies and has now pervaded everything. I called it the “heavy head trip” which had the intent of making people feel stupid. The end result is the student shuts down due to the extreme conflict versus true logic. Reality is now a social construct. The student turns into a drone, afraid to think, lest he be chastised by the “chosen enlightened”.


50 posted on 10/10/2014 10:14:04 AM PDT by Fred Hayek (The Democratic Party is now the operational arm of the CPUSA)
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To: therightliveswithus

Based on the teacher’s answer:

“yes you can. take two from five and add it to eight (8 + 2 = 10) then add three.”

What she is really saying is

“Correct”

Because you can take the left paren (which looks like a capital c), followed by the “o” from “you”, followed by the “r” from “from” and “three” (once you spell it out”, followed by the “c” in “can” and finally followed by the “t” in “take”.


51 posted on 10/10/2014 10:15:04 AM PDT by fruser1
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To: Girlene; tpmintx; ctdonath2

“Tell how to make 10 when adding 8+5.”

Actually, the kid was right. If you add 8+5, then you can’t make ten.

If they had asked: “If you have 8 units and 5 units, how could you group them into 10 units”, then the 8 and the 2 would be relevant.

They, however, ask the kid “when adding 8+5”. When one adds 8+5, one gets 13.


52 posted on 10/10/2014 10:16:08 AM PDT by xzins ( Retired Army Chaplain and Proud of It! Those who truly support our troops pray for victory!)
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To: sten
"...People who were trying to find a deeper meaning in the passage soon noticed that in base 13, 613 × 913 is actually 4213 (as 4 × 13 + 2 = 54, i.e. 54 in decimal is equal to 42 expressed in base 13). When confronted with this, the author claimed that it was a mere coincidence, famously stating that "I may be a sorry case, but I don't write jokes in base 13."
http://en.wikipedia.org/wiki/Base_13

53 posted on 10/10/2014 10:16:16 AM PDT by Diamond (He has erected a multitude of new offices, and sent hither swarms of officers to harass our people,)
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To: TheDon

Nope. The question reads more like a riddle, doesn’t it? “make 10”, not “what is 8+5?”. Reminds me of a bar trick/riddle: take five (short) drink straws, place them parallel to each other a few inches apart. Now, moving only two of them, make something round. ...


54 posted on 10/10/2014 10:16:35 AM PDT by hollywood (Stay on topic, please.)
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To: Maceman

No, not Room 101! That would be doubleplusungood!
Long live Big Brother!
Long live Big Brother!


55 posted on 10/10/2014 10:16:51 AM PDT by Fred Hayek (The Democratic Party is now the operational arm of the CPUSA)
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To: therightliveswithus

The English in the problem is pathetic to begin with but my answer would be:

I made $8.00 and hour one day and $5.00 an hour the next day. I got $13.00 for my work but the Government took $3.00 so all I have is $10.00.


56 posted on 10/10/2014 10:17:28 AM PDT by maddog55
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To: tpmintx

“Yeah, that’s a lot simpler than just 8 + 5 = 13. /s”

It’s a very simple example. I find it easier to do larger numbers, in my head, using this method. Question is asked wrong though. Question seems to imply that 10 is the answer, which is a stooped question. Question should be about converting numbers within the problem into numbers that are easier/quicker to use. The stooped question makes things much more difficult to understand something which is basically a very simple and useful process.


57 posted on 10/10/2014 10:20:30 AM PDT by Dr. Bogus Pachysandra (Don't touch that thing Don't let anybody touch that thing!I'm a Doctor and I won't touch that thing!)
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To: ctdonath2

Exactly right


58 posted on 10/10/2014 10:28:31 AM PDT by crusadersoldier
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To: Diamond

I had no idea. Then again, I failed to take my Martin Gardner’s Annotated Alice in the divorce, and didn’t look for numerology in the HHGTTG, either.


59 posted on 10/10/2014 10:28:36 AM PDT by Calvin Locke
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To: ctdonath2

Eggs Ackley!


60 posted on 10/10/2014 10:29:00 AM PDT by Dr. Bogus Pachysandra (Don't touch that thing Don't let anybody touch that thing!I'm a Doctor and I won't touch that thing!)
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