When I was in the first grade and maybe the second I could do math addition and subtraction backward (from left to right) and do it mostly faster than all the kids carrying from right to left. I often wonder how that would have developed and affected my life if I had never been "corrected". I can still do it a little bit but I never fully developed that skill because it was considered "wrong" by my teachers and I relearned how to do it the traditional way.
Do you mean to say that when you did, for example,
22 +
19
you would go 20+10 is 30, 2+9 is 11, 30+11 is 41?
That's definitely the fastest way to do addition and subtraction in your head, though I don't think I've heard it expressed like that before, or heard of it being done that way on paper. Interesting.
Or, maybe you went 2+1 is 3, 2+9 is 1, carry a 1, 41? Also interesting, basically the same as the "traditional" paper way of doing it, only backwards. There's no real reason it should be faster though, so it just would have been that you were used to doing it that way. There's nothing wrong with that way though. It still gets you the right answer.
Warder to starry_nite
Chapterfish — Nate's Writing Blog
http://chapterfish.wordpress.com
Chapterfish — Nate's Writing Blog
http://chapterfish.wordpress.com
Five Things We Don't Know About You.
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2122 Views
Five? That's a lot.
- 03/12/2010 09:34:06 PM
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Re: Five? That's a lot.
- 04/12/2010 10:53:45 PM
1400 Views
Re: Five? That's a lot.
- 05/12/2010 04:31:33 AM
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Hmmm... I'll play.
- 03/12/2010 09:38:13 PM
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Fiver, The Prophetic Bunny.
- 04/12/2010 02:01:13 AM
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/me claps A GAME!! I love games!! <3
- 04/12/2010 02:31:00 AM
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Ok. I'll give it a go.
- 04/12/2010 11:24:49 PM
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Mayonnaise is delicious. *NM*
- 05/12/2010 09:24:44 PM
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Hey! Me too!
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I don't know what you know
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You Knit!!!
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I knit.
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Recipes?
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Re: Recipes?
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1394 Views
I still think it works.
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Hush!
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Re: Hush!
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1595 Views
Re: I don't know what you know
- 07/12/2010 02:29:34 PM
1413 Views
Re: I don't know what you know
- 07/12/2010 02:33:22 PM
1436 Views
Any chance that this gets announced so more people see it and take part? *NM*
- 05/12/2010 09:12:02 PM
764 Views
I fear you do know everything about me
- 06/12/2010 10:15:07 AM
1375 Views
Alright
- 06/12/2010 06:11:32 PM
1411 Views
You dislike maths and post jokes like the one you just did?
*NM*
- 06/12/2010 07:34:44 PM
718 Views
*NM*
- 06/12/2010 07:34:44 PM
718 Views
"Broken, bleeding knuckles?"
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1280 Views
They get really, really dry in the winter and start to bleed.
- 06/12/2010 09:42:49 PM
1285 Views
I highly appreciate that fact that Starry"s post got threadjacked!! Awesome. *NM*
- 06/12/2010 10:53:07 PM
799 Views
again, with actual answers!
- 07/12/2010 01:34:43 PM
1280 Views


*NM*