The Lattice Multiplication is a method of multiplication that uses a lattice to multiply two multi-digit numbers. It breaks the multiplication process into smaller steps, which some practitioners find easier to use.
Let's start by consider the simple multiplication: 7 x 21
Step 1:
Draw a grid and split each cell diagonally.
Step 2: Consider each cell, beginning with the left cell. The column digit is 2 and the row digit is 7. Write their product 14 in the cell, with the digit 1 above the diagonal and the digit 4 below the diagonal.
Step 3: Fill all the cell in the manner as mention in step 2.
Step 4: Each diagonal sum is written where the diagoanl ends. Numbers are filled to the left and to the bottom of the grid, and the answer is the numbers read off down (on the left and across to the bottom).
Here we gain the answer of 21 x 7 = 147.
Next, we consider another multiplication between two multi-digit: 589 x 256.
Apply lattice multiplication and we gain:
The answer of 589 x 256 is 150784.
~~ "Lattice Multiplication." Wikipedia. Wikimedia Foundation, n.d. Web. 11 Apr. 2016.
(https://en.wikipedia.org/wiki/Lattice_multiplication)
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