This document explains how to multiply two digit numbers using lattice multiplication. Lattice multiplication involves setting up a grid with the digits of the first number written vertically and the second number written horizontally. Each digit is then multiplied together and written in the boxes, with the partial products added down the diagonals. The final answer is obtained by adding across the bottom row and down the left column, ignoring an initial zero if it occurs.

1. How you multiply tow digit number by using lattice multiplication Done by Jawaher and Nora Edeg409

2. We'll just be doing this multiplication box over and over again... Then, we'll do a little easy addition and we'll get our answer! OK, let's start doing one: Set it up like this:

3. First, we do Then, we do

4. Then, we do Then, the last one:

5. Now, just add down the diagonal stripes... Start at the bottom and work your way up the stripes:

6. We get our answer by reading down the left side and across the bottom. (Just ignore the first zero!)