# How do I get MOD 11?

## How do I get MOD 11?

Weighted MOD 11 Check-digit Calculation:

1. Multiply the first digit by 8.
2. Multiply the second digit by 6.
3. Multiply the third digit by 4.
4. Multiply the fourth digit by 2.
5. Multiply the fifth digit by 3.
6. Multiply the sixth digit by 5.
7. Multiply the seventh digit by 9.
8. Multiply the eighth digit by 7.

## How do you calculate mod value?

How to calculate the modulo – an example

1. Start by choosing the initial number (before performing the modulo operation).
2. Choose the divisor.
3. Divide one number by the other, rounding down: 250 / 24 = 10 .
4. Multiply the divisor by the quotient.
5. Subtract this number from your initial number (dividend).

## What does MOD mean on a calculator?

Modulo Calculator The modulo operation, which is also often referred to as the mod or modulus operation, identifies the remainder after a given number is divided by another number.

## How do you calculate modulus online?

Method 2: Perform the integer division and calculate the value of the difference. Example: Calculate A=123 modulo N=4 , make the division: 123/4=30.75 123 / 4 = 30.75 . Keep the integer part 30 , and multiply by N=4 , 30×4=120 30 × 4 = 120 . The difference between 123 and 120 is 3 , so 123=3(mod4) 123 = 3 ( mod 4 ) .

## How does Modulus 11 work?

The entire number is multiplied by the same weights that were used to calculate and the check digit itself is multiplied by 1. The results of the multiplication are added together. The sum is divided by 11 and if the remainder is 0, the number is correct.

## How are barcodes calculated?

The final digit of a Universal Product Code is a check digit computed as follows:

1. Add the digits in the odd-numbered positions from the right (first, third, fifth, etc.
2. Add the digits (up to but not including the check digit) in the even-numbered positions (second, fourth, sixth, etc.) to the result.

## How do you calculate mod 10 of a number?

The modulo 10 is calculated from this sum. First the sum is divided by 10. The remainder of the division is subtracted from 10 (calculate the difference to 10). The result of this subtraction is the checksum/check digit.

## How is mod 26 calculated?

For each number in the plaintext, multiply it by a = 5, then add b = 17, and finally take the answer modulo 26. For example, to encrypt the plaintext letter ‘v’, which corresponds to 21, the calculation is: (5 × 21 + 17) mod 26 = 122 mod 26 ≡ 18.