Find the check digits for each of these UPC codes:

1. Moving your mouse over the picture will show you the check digit. Clicking on will take you to a page showing the steps of how to find the check digit for that example. (Answers are also on the "show me" page).

 

check digit

 

08748611661?

 

01116803004?

04878941860?

 

61266806369?

 

01258778013?

 

01800801167?

07166204012?

 

2. Do a check digit calculation mod 10 to decide which of these UPC codes is correct, and which has an error:

A. 0-72512-06868-7

B. 0-09252-45310-1

C. 1-24431-65100-2

D. 0-11676-10881-5

3. Missing digits in even places

Code

missing digit

 

0-?0735-00458-1

1-?0584-17613-9

0-41?40-56400-3

 

0-4154?-33111-7

 

0-41540-5?401-0

 

0-21200-665?2-6

 

Answers