
Understanding Bar Code Check Digit Calculation

Interactive Video
•
Mathematics, Science
•
5th - 8th Grade
•
Hard

Liam Anderson
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary purpose of the check digit in a bar code?
To indicate the country of origin
To identify the product category
To provide the price of the product
To ensure the bar code is scanned correctly
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the first step of calculating the check digit, which digits are summed?
All digits except the check digit
Only the even-positioned digits
Only the odd-positioned digits
All digits including the check digit
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
During the second step, what is done after summing the digits in odd positions?
Add the sum to the check digit
Subtract the sum from 100
Double the sum and add to the previous total
Divide the sum by 2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the final step in determining the check digit?
Add 10 to the final sum
Divide the final sum by 10
Subtract the last digit of the sum from 10
Multiply the final sum by 2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the example with a check digit of two, what is the sum of the digits in odd positions?
34
17
8
68
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the exception to the check digit calculation when the final difference is 10?
Use the digit in the tens place
Use the digit in the hundreds place
Use the digit in the ones place
Use the digit in the thousands place
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the example with a check digit of zero, what is the sum of all digits except the check digit?
60
40
80
20
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