Exercises for Chapter 1
Classify each of the numbers in Exercises 1–4 as a counting number (N), a whole number (W), an integer (Z), a rational number (Q), an irrational number (I), or a real number (R). Include all the sets to which each number belongs.
Perform each computation first with pencil and paper. Then check your answer with a calculator.
Evaluate each of the following expressions, using a = 6, b = 3, c = −5, and d = −2. First do the problem with pencil and paper, and then check your answer with a calculator.
Simplify each of the following algebraic expressions. (Use positive exponents in your answers.)
Want to check your work? Find the answers to these problems.