Lattice MultiplicationThe coolest way to multiply!

By: Merilee CoxGrade: 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 3

So, 4 x 3 = 12

Get it? Here’s another one!

Let’s try 3 x 2

So, 3 x 2 = 6

Let’s try two digits!

ILet’s take another look!

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

IHere is another look!

So, 14 x 56 = 784

ILet’s Do Another One!17 x 52

So, 17 x 52 = 884

We Can Also Do Three Digit by Two Digit

240 x 13

2406

3

So, 240 x 13 = 3,120

So what do you think?