Chapter 1

Basic Concepts in Arithmetic


This chapter gives an overview of the basic concepts in arithmetic. It shows the arithmetic operations on real numbers and fractions. In addition, the chapter covers decimal operations and the rules of rounding off decimals, and illustrates the concept of percents and its applications.


Arithmetic; Decimals; Fractions; Percents

You must do the thing you think you cannot do.

Eleanor Roosevelt

Alessandro Volta (1745–1827), an Italian physicist, chemist and a pioneer of electrical science. He is most famous for his invention of the electric battery. Alessandro has a special talent for languages. Before ...

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