follow directions such as code books, charts of accounts, and procedures; use a calculator, computer, and computer software; prioritize and complete work by established deadlines; communicate sufficiently to answer questions and provide information about assigned work; compare information and recognize discrepancies; and. bookkeeping practices sufficient to record debits and credits; basic accounting and financial principles; invoices and similar forms of documentation; arithmetic sufficient to calculate percentages; computer program applications and database management; record keeping; and.