LatticeMultiplicationLatticeMultiplication The coolest way to multiply! By: Merilee Cox Grade: 4

Standard M4N3. Students will solve problems involving multiplication of 2-3 digit numbers by 1 or 2 digit numbers.

Lattice Multiplication may give you a new way to get to same answer.

Here’s the box…It’s got a spot for tens and a spot for ones:

Let’s try 4 x So, 4 x 3 = 12

Get it? Here’s another one!

Let’s try 3 x So, 3 x 2 = 6

Let’s try two digits!

I Let’s take another look!

Now, just add down the diagonal stripes... Start at the bottom and work your way up the stripes:

I Here is another look! So, 14 x 56 = 784

I Let’s Do Another One! 17 x So, 17 x 52 = 884

We Can Also Do Three Digit by Two Digit 240 x So, 240 x 13 = 3,120

So what do you think?