The assignment is designed for individuals or group work if you do not have enough computers (or choose to make this a group effort).
The assignment covers how to calculate exchange rates in a table format. The file automatically grades itself (grades worksheet), so that you will not have to grade it by hand. Students can check to see if they got the problem correct, thus allowing them to self-correct as they go along. I have included a teacher explanation worksheet that can be removed/modified when giving to students. The other two worksheets in the file is password protected so that students type only where needed (rates worksheet).