91Ó°ÊÓ

Perform each operation. SEE EXAMPLE 1. (OBJECTIVE 1) $$(-8)(-7)$$

Fill in the blanks. In algebra, we use letters, called ______, to represent real numbers.

Place an appropriate symbol in each box to make the statement true. If the numerator of a fraction is greater than the denominator, the fraction is called an __________fraction.

Fill in the blanks. The result of an addition is called the ______ . The result of a subtraction is called a ______. The result of a multiplication is called a ______. The result of a division is called a ______.

Give the additive and the multiplicative inverses of each number, if possible. SEE EXAMPLE 5 . (OBJECTIVE 4) $$3$$

Let \(x, y,\) and \(z\) represent three real numbers. Write an algebraic expression to denote each quantity. Assume that no denominators are \(0 .\) \(z\) less the product of \(x\) and \(y\)

Subtract vertically. SEE EXAMPLE \(6 .\) (OB]ECTIVE 3 ) $$\begin{array}{r}-13 \\\\-\quad 5 \\\\\hline\end{array}$$

Let \(x, y,\) and \(z\) represent three real numbers. Write each algebraic expression as an English phrase. Assume that no denominators are \(0 .\) $$(x+y+z)(x y z)$$

Graph each pair of numbers on a number line. In each pair, indicate which number is the greater and which number lies farther to the right. (OBJECTIVE 3). $$-7,-1$$

Perform each multiplication. Simplify each result when possible. SEE EXAMPLE 3. (OB)ECTIVE 2 $$\frac{5}{24} \cdot 16$$