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Date: Tue, 6 Dec 94 11:37:05 PST
From: matthew yarbrough
Subject: math

DEAR DR. MATH

I wrote to you already but I forget what college you go to.

What is 9,000,000,000,664,556,666,134,852,855,288  +

8,456,789,135,799,545,743,122,546,676,565,467?

Matt Yarbrough
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Date: Tue, 6 Dec 1994 15:32:12 -0500 (EST)
Subject: Re: math
From: Dr. Ken

Hello there Matthew!

The Math Doctors are all students at Swarthmore College in
Swarthmore, Pennsylvania.  Most of us are math majors.  In response
Write the numbers down so that one of them is on top of the other,
and so they line up evenly on the right side, like this:

9,000,000,000,664,556,666,134,852,855,288
+ 8,456,789,135,799,545,743,122,546,676,565,467
_________________________________________________

And then you add starting from the right side.  If you've done any
addition of smaller numbers before, you should be able to do this
one, too.  I'll get you started, and then see if you can finish the
problem!

1 11  11
9,000,000,000,664,556,666,134,852,855,288
+ 8,456,789,135,799,545,743,122,546,676,565,467
_________________________________________________
420,755

Do you see how that works?  The tricky part comes when you have
to carry the ones; that's when you get those 1's up on top of the first
number.

numbers; it just takes a while longer.  If you have trouble seeing how

-Ken "Dr." Math
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