Lattice Multiplication
Page 3 of 4

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:

14 x 56

Set it up like this:

lattice multiplication grid for 14 x 56

First, we do

1 x 5

 

 

lattice multiplication work for 1 x 5 = 5

Then, we do

4 x 5

lattice multiplication work for 4 x 5 = 20

Then, we do

1 x 6

lattice multiplication work for 1 x 6 = 6

Then, the last one:

4 x 6

lattice multiplication work for 4 x 6 = 24

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

lattice multiplication work for 14 x 56 lattice multiplication work for 14 x 56

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

lattice multiplication work for 14 x 56

14 x 56 = 784

Go to the next page to see another one!

Pages