Posted on 10/04/2013 9:46:54 AM PDT by Impala64ssa
“Number sense,” courtesy of Common Core? We don’t know the source of that math problem, but based on what we’ve seen elsewhere, it has all the hallmarks of Common Core math.
Now try your hand at this third-grade math problem, also reportedly from a Common Core lesson:
Common Core: It’s For the Children™. 
Answer: “I love obastard. Now, gimmme my damn money fool!”
“I know other people use different methods.”
Exactly! Per the 26+17 example, my normal process would be to leap to 46-3=43.
Common Core is mental masturbation.
I deal with number quite a bit and have tools to help me add large volumes of numbers. Some times I make a mistake, I since I am pretty good at math I can look at my mistaken product and say to myself, "WTF that can't possibly be right".
That’s pretty similar to how I do math in my head, obviously I don’t do it for little addition and subtraction like those, but the same concept works for larger numbers and multiplication and division. I call it stunt math, it can be a handy skill.
The second question in particular is written in such a manner that I’m not even sure what they are asking. The “solution” given seems to me to be arbitrary and only one of many possible solutions. As for the first question, “C” seems to be the answer, but I’m not sure what the point of it is.
Maybe, but then this is the way my brain works:
20 + 10 + 2*7 -1 = 43.
It’s not really the type of thing to be teaching kids though.
Like this.
_1
_26
+17
------
_43
You add six and seven to get thirteen. Write down the three in the ones spot and carry the 10 to the tens spot. Add two and one to make three and the one from the ones spot to make four. Your answer is forty-three.
Just to venture a guess, the lesson is that some people are smarter than you and you should leave all the difficult problems to them. It is the foundation of elitism.
So, how long will parents put up with this nonsense?
The public schools have gone from giving everybody a calculator to do simple arithmetic to driving kids and parents nuts with this convoluted baloney BS.
Way too much work.
It would be easier to just do the addition and subtraction.
It teaches you that you can dissect numbers into easier to work with numbers to solve your problem. It’s kind of odd to do it with numbers that small and simple, but if you get good at it and keep in practice you can multiply 4 digit numbers in your head (or more really, I can do 4).
For the second one, it just seems simpler to carry the one.
Tried and true, always works, every damn time (with positive numbers).
Apparently I am an idiot. I have no idea what they are asking. At least not according to the answers given as options.
Holy crap that’s funny!!!!!!
Vedic math. Learn to add left to right.
http://engineeringtube.net/Add-Numbers-using-Vedic-Mathematics-_video_15374
Third grade was fractions and decimals.
I have no idea what the point to the first question is, and just taking a wild guess on the second, maybe it is trying to set up the idea of Algebra? Dealing with unknowns? In this case where X was equal to 10? just a wild guess.
Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.