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#1 2011-02-15 12:15:01

John E. Franklin
Member
Registered: 2005-08-29
Posts: 3,565

What's 27 times 37 ?

Pretty neat, huh?


igloo myrtilles fourmis

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#2 2011-02-15 12:19:00

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,562

Re: What's 27 times 37 ?

Hi John;

How are you? I cannot see what you did.


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

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#3 2011-02-15 12:21:11

John E. Franklin
Member
Registered: 2005-08-29
Posts: 3,565

Re: What's 27 times 37 ?

The puzzle is what is 27 times 37 ? (pretty neat huh? the answer!!)


igloo myrtilles fourmis

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#4 2011-02-15 13:00:39

Mariner
Member
Registered: 2010-06-16
Posts: 35

Re: What's 27 times 37 ?

John E. Franklin wrote:

The puzzle is what is 27 times 37 ? (pretty neat huh? the answer!!)

the wonders of multiplication lol

Last edited by Mariner (2011-02-15 13:00:56)

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#5 2011-02-15 13:31:35

John E. Franklin
Member
Registered: 2005-08-29
Posts: 3,565

Re: What's 27 times 37 ?


igloo myrtilles fourmis

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#6 2011-02-15 14:59:59

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,562

Re: What's 27 times 37 ?

Hi John;

Yep, because of


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

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#7 2011-02-19 03:57:50

John E. Franklin
Member
Registered: 2005-08-29
Posts: 3,565

Re: What's 27 times 37 ?

Yes, that's true!!! Bobby, I learnt that once a long time ago...
By the way, I just watched a short video on a short cut way
to multiply two numbers inclusively between 11 and 19.
Here's an example:
  Take 14 times 17, which we all know is 238 by heart anyway by now, but anyhow,
simply add 7 to 14 and get 21. Tack a zero on the
end of 21 for 210.  Then to finish, add on to the
210, 4 times 7 or 28 for 238, wow!!!  I'll put this in
"This is Cool" too, since it is so wonderful!!


igloo myrtilles fourmis

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#8 2011-03-01 09:33:56

BT
Member
Registered: 2005-10-06
Posts: 7

Re: What's 27 times 37 ?

Nice math trick!
Here are more to enjoy:
http://www.pedagonet.com/maths/mathtricks.htm

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#9 2011-04-20 01:02:46

alexa.pete9
Member
Registered: 2011-04-18
Posts: 11

Re: What's 27 times 37 ?

Start with any two-digit number. Multiply each digit by itself then add these answers. Do the same thing to this new number and so on until something happens. For example 32 becomes 9+4 which is 13, 13 becomes 1+9 which is 10, 10 becomes 1+0 =1. This one ends at 1. What else happens when you start with different numbers?

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#10 2011-05-04 05:50:01

John E. Franklin
Member
Registered: 2005-08-29
Posts: 3,565

Re: What's 27 times 37 ?

@alexa.pete9
  I'll try 33:
9 + 9 = 18
1 + 64 = 65
36 + 25 = 61
36 + 1 = 37
9 + 49 = 58
25 + 64 = 89
64 + 81 = 145
1 + 16 + 25 = 42
16 + 4 = 20
4 + 0 = 4
maybe that's the answer...
16 = 16
1 + 36 = 37
9 + 49 = 58
I'm starting to go in a circle now...


igloo myrtilles fourmis

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#11 2012-12-19 13:06:20

mathaholic
Member
From: Juliania
Registered: 2012-11-29
Posts: 2,893
Website

Re: What's 27 times 37 ?

999
999
999


"What is the square root of 2? 1.4141592653589793238" Seriously, I thought it was that. Too round?
3.141592653589793238...

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