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Arithmetic is the study of numerical quantities. At least a basic understanding of arithmetic is fundamental in the study of algebra and many other mathematical studies.

Basic Operations[edit]

There are four basic operations one can perform on different numeric quantities (as well as other mathematical objects which you will encounter later). These are:

  • addition
  • subtraction
  • multiplication
  • division


It is also important to understand that the equals sign (in this book, '' ) means that the things on both sides are of equal value, and that is not an operator.

When you see an sign, say to yourself Same value, different appearance.