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.
03/12/2010 09:23:17 PM
- 1764 Views
Five? That's a lot.
03/12/2010 09:34:06 PM
- 1085 Views
Re: Five? That's a lot.
04/12/2010 10:53:45 PM
- 1014 Views
Re: Five? That's a lot.
05/12/2010 04:31:33 AM
- 1049 Views
Hmmm... I'll play.
03/12/2010 09:38:13 PM
- 1015 Views
Fiver, The Prophetic Bunny.
04/12/2010 02:01:13 AM
- 1033 Views
/me claps A GAME!! I love games!! <3
04/12/2010 02:31:00 AM
- 1101 Views
Ok. I'll give it a go.
04/12/2010 11:24:49 PM
- 1068 Views
Mayonnaise is delicious. *NM*
05/12/2010 09:24:44 PM
- 534 Views
I don't know what you know
05/12/2010 12:07:51 AM
- 941 Views
You Knit!!!
06/12/2010 05:29:19 PM
- 1040 Views
I knit.
06/12/2010 06:45:20 PM
- 947 Views
Recipes?
06/12/2010 07:14:35 PM
- 947 Views
Re: Recipes?
06/12/2010 07:15:49 PM
- 1041 Views
I still think it works.
06/12/2010 07:29:59 PM
- 906 Views
Hush!
06/12/2010 07:31:38 PM
- 951 Views
Re: Hush!
06/12/2010 07:41:23 PM
- 1204 Views
Re: I don't know what you know
07/12/2010 02:29:34 PM
- 1010 Views
Re: I don't know what you know
07/12/2010 02:33:22 PM
- 991 Views
Any chance that this gets announced so more people see it and take part? *NM*
05/12/2010 09:12:02 PM
- 594 Views
I fear you do know everything about me
06/12/2010 10:15:07 AM
- 1005 Views
Alright
06/12/2010 06:11:32 PM
- 1075 Views
You dislike maths and post jokes like the one you just did? *NM*
06/12/2010 07:34:44 PM
- 541 Views
"Broken, bleeding knuckles?"
06/12/2010 09:20:49 PM
- 919 Views
They get really, really dry in the winter and start to bleed.
06/12/2010 09:42:49 PM
- 905 Views
I highly appreciate that fact that Starry"s post got threadjacked!! Awesome. *NM*
06/12/2010 10:53:07 PM
- 615 Views
again, with actual answers!
07/12/2010 01:34:43 PM
- 923 Views