Chapter 1

Simplify each expression by combining any like terms. $$ a+3 a-2-7 a $$

Multiply. \(-2 \cdot 37\)

Insert \(<,>,\) or \(=\) in the space between the paired numbers to make each statement true. $$ \begin{array}{ll} 20 & 0 \end{array} $$

Use a commutative property to complete each statement. See Examples 1 and 3. $$ 19+3 y= $$

Have you attempted this course before? If so, write down ways that you might improve your chances of success during this second attempt.

Subtract. \(-26-(-18)\)

Evaluate. $$ 7^{2} $$

Simplify each expression by combining any like terms. $$ 5 g-3-5-5 g $$

Multiply. \(-\frac{1}{2}\left(-\frac{3}{5}\right)\)

The freezing point of water is \(32^{\circ}\) Fahrenheit. The boiling point of water is \(212^{\circ}\) Fahrenheit. Write an inequality statement using \(<\) or \(>\) comparing the numbers 32 and 212 .

Use an associative property to complete each statement. See Examples 2 and 4. $$ (x y) \cdot z= $$

List some steps that you can take if you begin having trouble understanding the material or completing an assignment. If you are completing your homework in MyMathLab \(^{\oplus}\) and MathXL \(^{\circledast}\), list the resources you can use for help.

Subtract. \(-60-(-48)\)

Evaluate. $$ 9^{2} $$

Add. See Examples 1 through 12,18, and 19. $$ -7+(-4) $$

Simplify each expression by combining any like terms. $$ 8 p+4-8 p-15 $$

Multiply. \(-\frac{1}{8}\left(-\frac{1}{3}\right)\)

The freezing point of water is \(0^{\circ}\) Celsius. The boiling point of water is \(100^{\circ}\) Celsius. Write an inequality statement using \(<\) or \(>\) comparing the numbers 0 and \(100 .\)

Use an associative property to complete each statement. See Examples 2 and 4. $$ 3 \cdot(x \cdot y)= $$

Subtract. \(-6-5\)

Evaluate. $$ \left(\frac{2}{3}\right)^{4} $$

Add. See Examples 1 through 12,18, and 19. $$ -9+(-3) $$

Simplify each expression by combining any like terms. $$ 6.2 x-4+x-1.2 $$

Multiply. 5(-1.4)

An angle measuring \(30^{\circ}\) and an angle measuring \(45^{\circ}\) are shown. Write an inequality statement using \(\leq\) or \(\geq\) comparing the numbers 30 and 45 .

Use an associative property to complete each statement. See Examples 2 and 4. $$ 2+(a+b)= $$

Subtract. \(-8-4\)

Evaluate. $$ \left(\frac{6}{11}\right)^{2} $$

Add. See Examples 1 through 12,18, and 19. $$ -11+(-5) $$

Simplify each expression by combining any like terms. $$ 7.9 y-0.7-y+0.2 $$

Multiply. 6(-2.5)

The sum of the measures of the angles of a parallelogram is \(360^{\circ} .\) The sum of the measures of the angles of a triangle is \(180^{\circ} .\) Write an inequality statement using \(\leq\) or \(\geq\) comparing the numbers 360 and \(180 .\)

Subtract. \(16-(-21)\)

Evaluate. $$ \left(\frac{1}{5}\right)^{3} $$

Add. See Examples 1 through 12,18, and 19. $$ -7+3 $$

Simplify each expression by combining any like terms. $$ 2 k-k-6 $$

Multiply. (-1)(-3)(-5)

Subtract. \(15-(-33)\)

Evaluate. $$ \left(\frac{1}{2}\right)^{5} $$

Add. See Examples 1 through 12,18, and 19. $$ -5+9 $$

Simplify each expression by combining any like terms. $$ 7 c-8-c $$

Multiply. (-2)(-3)(-4)

Determine whether each statement is true or false. See Examples 1 through 6 and 10. $$ 8 \geq 9 $$

Subtract. \(-6-(-11)\)

Evaluate. $$ (1.2)^{2} $$

Add. See Examples 1 through 12,18, and 19. $$ 10+(-3) $$

Simplify each expression by combining any like terms. $$ -9 x+4 x+18-10 x $$

Multiply. (2)(-1)(-3)(0)

Subtract. \(-4-(-16)\)

Evaluate. $$ (1.5)^{2} $$