2-1 The Integers: To represent positive and negative integers on a number line. To compare and order positive and negative integers.

2-2 Decimals on the Number Line: To represent positive and negative decimals on a number line. To compare positive and negative decimals.

2-3 Adding Positive and Negative Numbers: To find the sum of two or more integers.

2-4 Subtracting Positive and Negative Numbers: To find the difference of two integers.

2-5 Multiplying Positive and Negative Numbers: To find the product of two or more integers.

2-6 Dividing Positive and Negative Numbers: To find the quotient of two integers.

2-7 Using Positive Exponents: To read, write, and simplify exponential expressions.

2-8 Negative Integers as Exponents: To simplify expressions involving negative exponents.