Partial-Products Method

 

 

Example:   38 * 22

 

 

 

 

100s

10s

1s

Think of 38 as 30 + 8

 

3

8

Think of 22 as 20 +2

 

*2

2

 

Multiply each part of 38 by 22

20 * 30

6

0

0

 

 

20 *   8

1

6

0

 

 

  2 * 30

 

6

0

 

 

  2 *  8

 

1

6

Add the four partial products

 

8

3

6