Question

Using the lattice method, find the total amount of snowfall in all the four years.

• A. 1,350 inches
• B. 1,320 inches
• C. 1,430 inches
• D. 1,210 inches

Answer 1

The correct option is B 1,320 inches


From the table, we observe:


$\therefore \text{Total amount of snowfall will be}$
$=12\times 110\text{inches}$

For lattice multiplication:

Step 1: Draw a 3x2 table and on the top and right, just put the digits:


Step 2: Draw the diagonals and write the digits in the boxes:


Step 3: Add the digits along the diagonal and write them from the left side to the right side:

So, in four years, total amount of snowfall = 1,320 inches