Secondly, we draw diagonal paths along each cell down until it goes out of the cell.Ģ → (1) 2 x 1 = 2 (2) 2 x 1 = 2 (3) 2 x 9 = 18ģ → (1) 3 x 1 = 3 (2) 3 x 1 = 2 (3) 3 x 9 = 27 3 digit multiplication: lattice method | Multiplying 3 digit by 2 digitįirstly, as usual, we draw our grid of 3 columns (for 119) and 2 rows (for 23), then place 119 at the top of each cell and 23 on the right hand side of the grid. Now finally, we combine the digits of the answer from top of the lattice to bottom.Įxample 2. We place 2 on the upper triangle of the second cell, and 4 on the lower triangle.įurthermore, we start adding the numbers on the same diagonal path, from the last triangle of the last cell.
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