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re: Can you do multiplication in your head thru 12?

Posted on 2/14/19 at 1:17 am to
Posted by cable
Member since Oct 2018
9735 posts
Posted on 2/14/19 at 1:17 am to
"I will admit that 11 x 12 still makes me think about it."

10 x 12 = 120 plus 12 = 132.
This post was edited on 2/14/19 at 1:18 am
Posted by White Roach
Member since Apr 2009
9666 posts
Posted on 2/14/19 at 1:40 am to
Awesome! You know your 10s!
Posted by The Quiet One
Former United States
Member since Oct 2013
12169 posts
Posted on 2/14/19 at 5:04 am to
I had to count by 1, 2, 3, etc up to 12 in 3rd grade. Made my kid do thr same. Piece of cake, even when I brainfart on one like 8x8...just count by eight eight times.
Posted by engvol
england
Member since Sep 2009
5435 posts
Posted on 2/14/19 at 5:10 am to
Yes, easily

At school we never really practiced above 12 though outside of square numbers etc. But I’d think could 13

Maybe I’ll try one day
Posted by cable
Member since Oct 2018
9735 posts
Posted on 2/14/19 at 5:18 am to
I can also calculate tips without an app.
Posted by gthog61
Irving, TX
Member since Nov 2009
71001 posts
Posted on 2/14/19 at 5:19 am to
I went to Catholic school grades 4-6 so yes.
Posted by Ponchy Tiger
Ponchatoula
Member since Aug 2004
50004 posts
Posted on 2/14/19 at 5:34 am to
quote:

Who doesn't know the fingers trick for 9 times tables?
. I don’t have any idea what the fingers trick is? But I guess it’s because I never had a need for anything like that. X12 in the head is easy and I am not that good with math.
Posted by engvol
england
Member since Sep 2009
5435 posts
Posted on 2/14/19 at 5:36 am to
You don’t need the stupid fingers trick

10s go up one
Digits go down one
Posted by Wtodd
Tampa, FL
Member since Oct 2013
68603 posts
Posted on 2/14/19 at 5:54 am to
quote:

Can you do multiplication in your head thru 12?

Yes.....I could do it in the 3rd grade.....seriously......my brain is a calculator......but frick English
Posted by MrSpock
Member since Sep 2015
5163 posts
Posted on 2/14/19 at 6:03 am to
quote:

So you have to think about it and add? Then your answer is no.


Think about what? I'm not doing math in my head. I already did that shite back in second grade when you too should
have memorized that shite. No wonder this shite state is so far behind the rest of the free world.
Posted by td01241
Savannah
Member since Nov 2012
30549 posts
Posted on 2/14/19 at 6:45 am to
frick math. It’s just a man made construct that isn’t real. Like time.
Posted by LZ83
La
Member since Sep 2016
17446 posts
Posted on 2/14/19 at 7:05 am to
Yup
Posted by Hamma1122
Member since Sep 2016
22542 posts
Posted on 2/14/19 at 7:09 am to
Yes
Posted by griswold
Member since Oct 2009
4341 posts
Posted on 2/14/19 at 3:01 pm to
I went to school with a kid who got a motorcycle when he memorized his multiplication tables. I hated that fricking bastard for that.
Posted by LSUintheNW
At your mom’s house
Member since Aug 2009
37021 posts
Posted on 2/14/19 at 3:04 pm to
quote:

Can you do multiplication in your head thru 12?


Of course. I'm quick with easy #'s.
Posted by WG_Dawg
Member since Jun 2004
91065 posts
Posted on 2/14/19 at 3:05 pm to
quote:

you add the two numbers and put it the middle and add 1 to the first number if they add up to over 10 e.g. 11x43=473


I'm missing something here, can you explain
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