Algebra/Chapter 1/Integers

Factoring and Divisibility AlgebraChapter 1: Elementary ArithmeticSection 5: Integers Fractions 1.25rem 1.5: Integers In this section, we begin to expand beyond the scope of whole numbers by exploring negative numbers. Adding and Subtracting Integers Multiplying and Dividing Integers Exponents and Roots Order and Absolute Value The absolute value (or modulus) of a real number , denoted by refers to its distance from zero on the real number line. This value is always taken to be nonnegative. For example, the illustration on the left shows the following: The absolute value of -5 is 5 because it is 5 away from zero, and the absolute value of 3 is 3 because it is 3 away from zero. The absolute value of a positive number or zero is always itself. Conversely, the absolute value of a negative number is its opposite. Likewise, the distance between two numbers on the number line can be thought of as the absolute value of the difference between them.