1: Whole Numbers

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1.1: Place Value and Names for Whole Numbers
Much like learning a language, learning algebra begins with getting to know the basic vocabulary. As you continue to learn, you add to your vocabulary and practice it often so that it because easy. In algebra, numbers and symbols are used like words and ideas in a language. The most basic numbers used in algebra are those we use to count objects.
1.2: Adding and Subtracting Whole Numbers
1.3: Multiplying and Dividing Whole Numbers
We begin this section by discussing multiplication of whole numbers. The first order of business is to introduce the various symbols used to indicate multiplication of two whole numbers.
1.4: Order of Operations
1.5: Positive and Negative Numbers
Negative numbers have a rich and storied history. One of the earliest applications of negative numbers had to do with credits and debits. For example, if $5 represents a credit or profit, then −$5 represents a debit or loss. Note that if a vendor experiences a profit of $5 on a sale, then a loss of −$5 on a second sale, the vendor breaks even, i.e., the sum of $5 and −$5 is zero. In much the same way, every whole number has an opposite or negative counterpart.

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