# Numbers, Units and Arithmetic OpenCourseWare: A Free Bachelor Level Math Class by The Open University

Published Feb 12, 2009

'Numbers, Units and Arithmetic' is an OpenCourseWare focusing on whole numbers, fractions, decimals and fundamentals of addition, subtraction, multiplication and division, as well as unit conversions and measurement techniques. This undergraduate-level course is provided free of charge by the Open University. It is intended for students interested in establishing a firm foundation for future studies in mathematics, computer science, engineering or other scientific fields.

#### Numbers, Units and Arithmetic: Course Specifics

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#### Numbers, Units and Arithmetic: Course Description

The decimal system simplified arithmetic and is widely believed to be based on the number ten because humans have ten fingers. In this system, the location of the digit within the number is the determining factor as to whether it represents units, tens, hundreds, thousands, ten-thousands, one-hundred thousands and so-on. 'Numbers, Units, and Arithmetic' is a free course that examines this system that is based on powers of tens. It's provided courtesy of The Open University's Mathematics and Statistics Department. This course made up of three main topics of whole numbers, units of measurement and arithmetic. The subject of whole numbers covers number lines, decimals, place values and fractions. The units of measurement section focuses on how quantities are established, such as a 2-liter bottle or a foot-long hot dog. Unit of measure topics covered include unit conversions and measuring techniques. The final section on arithmetic examines arithmetic expressions using whole numbers, multiplication and division, decimal calculations, fractions and negative numbers. Students who complete the course will have the skills to perform a variety of tasks, such as writing whole numbers and comparing size, multiplying and dividing whole numbers and decimals and explaining arithmetic processes. About five hours are needed to complete this undergraduate-level course.

The materials for the course consist of online unit notes and an online quiz. In addition students have have access to several tools, including a discussion forum, learning journal and knowledge map. If you would like to take this OpenCourseWare, visit the numbers, units and arithmetic course page.

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