91Ó°ÊÓ

Compute the given expression. Round off your answer to two decimal places where necessary. $$12.4-20(0.8)+4.7$$

Name the property used in each step. $$\begin{aligned} 3(4 y) &=(3 \cdot 4) y \\ &=12 y \end{aligned}$$

Evaluate each expression. $$-(+4)$$

Locate the given number between two successive integers on the number line. For example, if the given number is \(2.6,\) it is located between 2 and 3 on the number line. $$\frac{-15}{2}$$

Evaluate each of the following expressions, if possible. $$11-(6 \cdot 2-7)$$

Evaluate each expression. $$-|4|$$

Fill in the appropriate ordering symbol: either \(<,>,\) or \(=\). 7_____7.

In Exercises \(1-66,\) compute the value of each expression. $$32+(-61)$$

Consider the following statements. If the statement is true, explain why. If the statement is false, explain why and/or give an example illustrating why. (a) Every rational number is an integer. (b) Every integer is a rational number. (c) \(-15\) is greater than \(-10\) (d) The absolute value of \(-15\) is greater than the absolute value of \(-10 .\) (e) A rational number must be positive. (f) An integer must be positive. (g) Every real number is a rational number. (h) Every rational number is a real number.

In Exercises \(1-66,\) compute the value of each expression. $$-48+(-19)$$