First credit card digit: Card network or Industry identifier ... Your credit card account number forms part of your card number, but the two are not the same. Credit card account numbers are ...

75 is the whole number and 43 and 32 are the parts. When a number is made up of more than one digit we can use a place ... one in the ones column. 25 has 2 tens and 5 ones so we add 2 packets ...