#Lattice method multiplication 3 digit free#

#Lattice method multiplication 3 digit free#

Using Free Milk Lid Jug Lids for Hands-On Math Act.Tools for Helping Students Graph Equations.Although it works, it is a pretty lengthy process for a college student, especially when she only has so much time to complete a test. It gets its name from the fact that to do the multiplication you fill in a grid which resembles a garden lattice, something you might find ivy growing on. This form of multiplication dates back to the 1200s or before in Europe. Remember to regroup if necessaryįinally, to figure out your product, read the numbers from the left of the grid around to the bottom of the grid. To finish, you just add down the diagonal lines. If there is not a number in the tens place, put a zero. The number in the tens place goes in the upper part of the box, the number in the ones places goes in the lower part of the box. Work through the lattice and multiply each number together. You can have the diagonal lines continue so that they are outside of the grid boxes.

Use a ruler if you like nice straight lines. Now, divide each box in half by drawing a diagonal line, starting in the top right corner and moving to the bottom left corner. Write the second digits on the right going down the lattice, one number per box.

Write the digits for the first factor going across the top of the lattice (grid), one digit per box. If it is a 3-digit problem by a 2-digit problem, you will need a grid that is three by two.

If it is a 3-digit by 3-digit problem, you will need a grid that is three by three. Draw a grid so that each digit has its own box.