The correct answers are: Timesheets and clock cards are pre-numbered and checks are made to ensure that all timesheets and clock cards are accounted for before the payroll is calculated; The accountant performs analytical procedures on the payroll costs at the end of each quarter; The software that is used to calculate the payroll produces a report at the end of each period showing all employees who were paid in the previous month that are not to be paid in the current month; After the payroll is calculated by the computer, a payroll clerk checks that the calculations are accurate for a small number of employees.

Checking pre-numbered timesheets and clock cards helps ensure that all of the wage costs have been accounted for. The review performed by the accountant helps ensure that the figure is not understated, it also helps ensure that the figure is not overstated. The exception report produced by the computer helps identify employees that may have been missed.

The check on the accuracy of payroll calculations helps ensure that calculations are accurate, it does not ensure that calculations are complete. Similarly, the internal auditors' check on the employees helps ensure that the company is only paying for the work that has been done, it does not ensure that the wages costs are complete.