redstreak one
Posts: 1,152
Sep 22, 2014 6:19pm
Show how to solve the problem 378x6 using place value with regrouping. Explain how you knew when to regroup.
this was on my sons homework! What do you guys think?
this was on my sons homework! What do you guys think?
GOONx19
Posts: 7,147
Sep 22, 2014 6:26pm
I don't know what regrouping means.
salto
Posts: 2,611
Sep 22, 2014 6:44pm
378 x 6 as (300 x 6) + (70 x 6) + (8 x 6) = 1800 + 420 + 48 = 2268
TedSheckler
Posts: 3,974
Sep 22, 2014 7:13pm
Common Core is the worst.
GOONx19
Posts: 7,147
Sep 22, 2014 7:31pm
That's what I do when I multiply in my head. I didn't know it had a name.salto;1656581 wrote:378 x 6 as (300 x 6) + (70 x 6) + (8 x 6) = 1800 + 420 + 48 = 2268
Ironman92
Posts: 49,363
Sep 22, 2014 7:39pm
I do 400x6 and then minus 6x22 from itGOONx19;1656590 wrote:That's what I do when I multiply in my head. I didn't know it had a name.
Rotinaj
Posts: 7,699
Sep 22, 2014 8:39pm
Do you minus from it or subtract it? Plz be honest.Ironman92;1656598 wrote:I do 400x6 and then minus 6x22 from it
Ironman92
Posts: 49,363
Sep 22, 2014 9:06pm
I minus....subtracting confuses meRotinaj;1656628 wrote:Do you minus from it or subtract it? Plz be honest.
S
Sonofanump
Sep 22, 2014 10:07pm
Fact.TedSheckler;1656586 wrote:Common Core is the worst.
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WebFire
Posts: 14,779
Sep 22, 2014 10:27pm
Bingo. I don't why this is so hard for some people to understand.GOONx19;1656590 wrote:That's what I do when I multiply in my head. I didn't know it had a name.
-Society-
Posts: 1,348
Sep 22, 2014 10:39pm
I would have to imagine that it gets more complicated than the example above, from what I have seen online.WebFire;1656708 wrote:Bingo. I don't why this is so hard for some people to understand.
Classyposter58
Posts: 6,321
Sep 22, 2014 10:59pm
Eh it's trying to provide a way to teach critical thinking to kids because the amount of state testing currently going on has gotten so ridiculous that it seems all teaching is about covering as much as possible opposed to going in depth on certain things. One thing I'm certainly not going to do is follow this, once I get my job it's gonna be all depth cause it's fucking history
SportsAndLady
Posts: 35,632
Sep 22, 2014 11:02pm
Are you drunk? Or just retarded?Classyposter58;1656723 wrote:Eh it's trying to provide a way to teach critical thinking to kids because the amount of state testing currently going on has gotten so ridiculous that it seems all teaching is about covering as much as possible opposed to going in depth on certain things. One thing I'm certainly not going to do is follow this, once I get my job it's gonna be all depth cause it's fucking history
Ironman92
Posts: 49,363
Sep 22, 2014 11:07pm
retarjSportsAndLady;1656725 wrote:Are you drunk? Or just retarded?
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WebFire
Posts: 14,779
Sep 23, 2014 9:25am
Everything in school gets more complicated.-Society-;1656711 wrote:I would have to imagine that it gets more complicated than the example above, from what I have seen online.
Q
QuakerOats
Posts: 8,740
Sep 23, 2014 9:47am
GOONx19;1656577 wrote:I don't know what regrouping means.
Being down 3 touchdowns at halftime, getting a pep talk / making adjustments / playing together / executing, and then winning by a field goal.
Q
QuakerOats
Posts: 8,740
Sep 23, 2014 9:54am
And then there is the history class CC brainwashing brought to you by the pacifist progressives.
http://www.independentsentinel.com/common-core-hate-world-war-ii-america-hate-what-america-represents/
http://www.independentsentinel.com/common-core-hate-world-war-ii-america-hate-what-america-represents/
redstreak one
Posts: 1,152
Sep 23, 2014 12:08pm
My problem is with the wording, last week he was doing expanded form, so 817 is 800+10+7. So in this problem no mention of the word expanded form, just place value with regrouping.
Many of you are saying you multiply that way already, when did you learn to do it? I didn't learn to do it until I understood the long way of multiplying each number and carrying. My dad taught Algebra for 25 years, and he always said, "learn to do it the long way then think of short cuts."
Many of you are saying you multiply that way already, when did you learn to do it? I didn't learn to do it until I understood the long way of multiplying each number and carrying. My dad taught Algebra for 25 years, and he always said, "learn to do it the long way then think of short cuts."
1_beast
Posts: 5,642
Sep 23, 2014 12:16pm
threeve
arnie palmer
Posts: 198
Sep 23, 2014 1:01pm
I was not a fan of this Common Core math method either until I saw results with my daughter. She is in 3rd grade this year and had trouble with Math last year (took her long time to do addition or subtraction). Now they are focusing on this regrouping for adding large numbers and the teacher said she is at top of her class in speed of doing these problems correctly. Wife and I looked at each other and said weird for us, but working for her so great.
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WebFire
Posts: 14,779
Sep 23, 2014 1:06pm
I agree the long way should be taught first. But there are many that just go apeshit over the new math and want it eliminated because they don't understand and that's not how they did it.redstreak one;1656843 wrote:My problem is with the wording, last week he was doing expanded form, so 817 is 800+10+7. So in this problem no mention of the word expanded form, just place value with regrouping.
Many of you are saying you multiply that way already, when did you learn to do it? I didn't learn to do it until I understood the long way of multiplying each number and carrying. My dad taught Algebra for 25 years, and he always said, "learn to do it the long way then think of short cuts."
CenterBHSFan
Posts: 6,115
Sep 24, 2014 5:22pm
How many k-12 teachers were involved in creating Common Core? Google searches are all telling me that there weren't any involved in that process.
Old Rider
Posts: 2,470
Sep 25, 2014 9:20am
I taught both the long way (the way I was taught) and shortcuts to my 3rd grade class. Some kids chose one over the other. All I cared about was the final answer and showing me how they got their.
salto
Posts: 2,611
Sep 25, 2014 9:31am
Its disturbing this thread made it to #24 posts and that some of you are fathers.
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fan_from_texas
Posts: 2,693
Sep 25, 2014 10:47am
That's how I do math in my head, but I don't think anyone ever specifically taught me. It's a quick and dirty way to get an order of magnitude estimate on things, which is much more useful in real life than the alternative.redstreak one;1656843 wrote:My problem is with the wording, last week he was doing expanded form, so 817 is 800+10+7. So in this problem no mention of the word expanded form, just place value with regrouping.
Many of you are saying you multiply that way already, when did you learn to do it? I didn't learn to do it until I understood the long way of multiplying each number and carrying. My dad taught Algebra for 25 years, and he always said, "learn to do it the long way then think of short cuts."