Seek The Multiplication Treasure

2009-2010

Copy this problem. Multiply the factors in the top row by the digit in the ones place in the second factor.

342x 23

3 4 2x 3

26

1

Since 4 • 3=12 Carry the 1 and write down the 2

10

Multiply 3 • 2Multiply 4 • 3 Multiply 3 • 3 + 1

Now you will multiply the top factor by the tens digit in the second factor. In this problem, you multiply by the

2 in the tens place or 20.

342x 23

3 4 2x 3

26102

Since the 2 actually represents 2 tens or 20, we will want to put a zero in the ones place

in the second row of our work before we multiply anything else.

342x 23

3 4 2x 3

26102

0

Multiply the 2 times every digit in the top factor and write the answer in the second

row below the line.

342x 23

3 4 2x 3

26102

0486

To check to see if you are ready to add, count the number of digits in the second

factor.

342x 23

3 4 2x 3

26102

048

There are two digits in the second factor.

6

Since there are two digits in the second factor there should be two rows of numbers

to add to get the product.

342x 23

3 4 2x 3

26102

048

There are two digits in the second factor.

6one

two

Since the number of digits matches the number of rows, we now add the rows

together to get the product of the original problem.

342x 23

3 4 2x 3

26102

048

There are two digits in the second factor.

6one

two+

Since the number of digits matches the number of rows, we now add the rows

together to get the product of the original problem.

342x 23

3 4 2x 3

26102

0486+7866

Work the following problem following the steps used in the previous problem.

914x 48

Work the following problem following the steps used in the previous problem.

914x 48

731236560

1

+43,872

Work the following problem following the steps used in the previous problem.

767x 89

690361360+68,263

6655

Are you up to the adventure of finding the multiplication treasure? Remember X

(multiplication) marks the spot!

Choose from the following problems, at least two from each column. Solve them on Multiplication Graph Paper and pass in to your teacher. (Don’t forget to write your name on your paper.)

• 32 X 26• 28 X 18• 46 X 22• 53 X 34• 125 X 23

• 532 X 16• 208 X 58• 246 X 31• 53 X 344• 2,125 X 24

To Review the Demonstration again, click on the Treasure Chest.