Let's practice lattice multiplication! Using a grid, this method helps you keep your work neat and organized. Study the example carefully, then complete the activity.

A lattice is a crisscross pattern, like a grid. When using this method in multiplication, it makes checking your work easy! First, draw a box with enough squares for each digit in the numbers you are multiplying, and then draw diagonal lines in each box from top right to bottom left. Next, write the digits of the first number along the top of the grid and the digits of the second number along the right side. Multiply each top digit by each side digit, writing the tens digit above the diagonal and the ones digit below. When that's done, start adding along the diagonals from the bottom-right corner. Write the ones digit of each sum below the grid. If the sum is 10 or more, carry over the tens to the next diagonal on the left. After adding all diagonals, the numbers below the grid give the final answer. Now you know how lattice multiplication works. Grab your pencil and finish the challenge!