1.the totals of the debit sides of prepaid insurance, accounts payable, property tax expense were each understated "$100."
2.transposition errors were made in accounts receivable and service revenue. Based on posting errors, the correct balances were $2570 and $8960 respectively.
3.a debit posting to salaries expense of $200 was omitted.
4.a $1000 cash dividend by the corporation was debited to common stock for $1000 and credited to cash for $1000.
5.a $520 purchase of supplies on account was debited to equipment for $520 and credited to cash for $520.
6.a cash payment of $450 for advertising was debited to advertising expense for $45 and credited to cash for $45.
7.a collection from a customer for $420 was debited to cash for $420 and credited to accounts payable for $420.

1. Add $100 to the acocunts
2. Change the accounts to the correct amount
3. Debit Salaries Expense Account for $200
4. Change the Debit entry to the correct account
5. Change the entry to Debit Supplies and Credit accounts Payable for the amount.
6. Correct the amount in the two accounts.
7. Change the Credit to Accounts Payable to Accounts Receivable for the amount