Lattice Method....Please Help!!!!!!!!

T

tseday871221

New member
Joined
Dec 10, 2006
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22
Help with alogrithms............?
can anyone show me how i would use the lattice method to solve these two problems:

43twelve x 23twelve

and also

66seven x 66 seven
 
Hello, tseday871221!

A little explanation would have helped.
. . Not everyone speaks the same language as your teacher or textbook.

And what "algorithms" are you referring to?

43twelve x 23twelve

and also: 66seven x 66 seven
Click to expand...

Taking a wild guess, I think these are numbers in base-12 and base-7.
. . And I'm not familiar with the "lattice method".

Here they are, written in their respective bases.
Code: 
      4 3                        6 6
   x  2 3   base-twelve       x  6 6  base-seven
   ------                    --------
    1 0 9                       5 6 1
    8 6                       5 6 1
   -------                  ----------
    9 6 9                     6 5 0 1


~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~

If you're desperate, you can change the numbers to base-ten,
. . multiply, then change back to the original base.

\(\displaystyle \begin{array}{c}43_{\text{twelve}}\:=\:51 \\ \\ \\
23_{\text{twelve}} \:=\:27\end{array}\;\;\Rightarrow\;\;51\,\times\,27\:=\:1377 \:=\:969_{\text{twelve}}\)

 
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