OTA 0501 - Occupational Business Mathematics Using Spreadsheets OTA 0501 - Occupational Business Mathematics Using Spreadsheets 48 con. hrs. Occupational This course covers the fundamentals of business mathematics with applications for banking, payroll, taxes and insurance, purchasing merchandise, markup and markdown, interest, mortgages, and consumer credit. Concepts are introduced using the traditional method of calculating. The course will also introduce how the same calculations can be performed using an electronic spreadsheet. Course Designations: (CH)