Final answer:
A bank correction of an error from recording a $50 check paid as $500 appears on the bank statement as a debit memorandum that decreases the account balance.
Step-by-step explanation:
When a bank correction of an error occurs, it is reflected on the bank statement as a debit memorandum that decreases the account balance. In this case, the bank recorded a $50 check as $500, so the correction would result in a decrease in the account balance.