Math 553 Lattice Multiplication

LATTICE MULTIPLICATION

By: Keri Adams

Welcome to Lattice Multiplication

What is Lattice Multiplication?

Lattice multiplication is a method of multiplying large numbers using a grid. This method breaks the multiplication process into smaller steps; which for some, makes it easier.

Setting up the Lattice First draw a grid that has as many rows and columns

as the multiplicand and the multiplier.

The grid below shows multiplying a 2-digit number by a 2-digit number.1 2

1

2

Drawing the grid:

Multiplicand vs. Multiplier

What is a Multiplicand?

A multiplicand is the number that is or is to be multiplied by another number.

What is a Multiplier?

A multiplier is the number by which another number is multiplied

For example: in 35 × 10, the multiplicand is 35 and the multiplier is 10.

Multiplicand and Multiplier?

Where to place the Multiplicand and

Multiplier

Multiplicand

Multiplier

3 5

0

1

Example: 35 × 10

Setting up the Lattice

Draw a diagonal line through each box from the upper right corner to the lower left corner.

This gives us a spot for

the tens place and a spot for the ones place.

Tens

Ones

Quick review: Place Value

How to put the answer into the lattice

Tens

Ones

1 4

1 × 1 Lattice Multiplication Video

1 × 2 Lattice Multiplication Video

2 × 2 Lattice Multiplication

Example:

Answer:

First Second Third

Fourth Fifth Last

2 × 2 Lattice Multiplication Video

Tips to Go:

References: http://www.coolmath4kids.com/times-tables/times-tables-lesson-lattice-

multiplication-3.html

http://www.thefreedictionary.com/multiplicand  http://www.thefreedictionary.com/multiplier  http://www.free-maths-dictionary.com/multiplicand

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http://www.coolmath4kids.com/times-tables/times-tables-lesson-lattice-multiplication-1.html