Chapter 2

What is the opposite of 5? (A) $$ \frac{1}{5} $$ (B)$$ -\frac{1}{5} $$ (C) $$ 5 $$ (D) $$ -5 $$

Simplify the expression \(2 x-3 x^{2}-x\) $$ (A)3 x-3 x^{2} $$ $$ (B)-2 x^{2} $$ $$ (C)x-3 x^{2} $$ $$ (D) 0 $$

Use mental math to solve the equation. $$ a-5=19 $$

Use the distributive property and mental math to simplify the expression. $$ 3(9.20) $$

What is the value of \(-|-2| ?\) (F)2 (G) -2 (H) |2| (D) |-2|

Determine whether the statement is true or false. Use the subtraction rule or a number line to support your answer. If you subtract a negative number from a positive number, the result is always a positive number.

Simplify the expression \(-4(y+2)-5 y\) $$ (F)-9 y-8 $$ $$ (G)-9 y-6 $$ $$ (H)-9 y+2 $$ $$ (J)-9 y+8 $$

Use mental math to solve the equation. $$ 34-n=17 $$

Use the distributive property and mental math to simplify the expression. $$ 7(5.98) $$

What is the solution of \(|x|=18 ?\) (A) 18 \((B)-18\) (C) 18 and \(-18\) (D) none of these

Determine whether the statement is true or false. Use the subtraction rule or a number line to support your answer. If you subtract a positive number from a negative number, the result is always a negative number.

Use mental math to solve the equation. $$ 2 b=10 $$

Use the distributive property and mental math to simplify the expression. $$ 2(2.90) $$

What does \(-3(6)\left(-\frac{1}{3}\right)\) equal? A) \(-6\) B) \(-2\) C) \(2\) D) \(6\)

What is the velocity of a diver who descends to the ocean floor at a rate of 3 meters per second? \begin{equation}|-3| \mathrm{m} / \mathrm{sec} \end{equation}

What does \(5-\left(-\frac{1}{3}\right)+\frac{2}{3}\) equal? A. 4 B. \(4 \frac{2}{3}\) C. \(5 \frac{1}{3}\) D. 6

Use mental math to solve the equation. $$ y \div 4=6 $$

Use the distributive property and mental math to simplify the expression. $$ 6(8.75) $$

Which of the following statements is not true? F) The product of any number and zero is zero. G) The order in which two numbers are multiplied does not matter. H) The product of any number and 1 is a negative number. J) The product of any number and 1 is the opposite of the number.

Evaluate the expression for the given value of the variable. \(x+3\) when \(x=2\)

Which inequality is true? A) \(-9>-5\) B) \(9<5\) C) \(9<-5\) D) \(-9<5\)

What does \(-x-7\) equal when \(x=-1 ?\) F. \(-8\) G. \(-6\) H. 6 J. 8

Find the sum. $$ -1+10 $$

Use mental math to solve the equation. $$ \frac{60}{x}=6 $$

Use the distributive property and mental math to simplify the expression. $$ -3(4.10) $$

Simplify the expression \(2(-4)(-x)(-x)(-x)\) A) \(-24 x\) B) \(-8 x^{3}\) C) \(8 x^{3}\) D) \(24 x\)

Evaluate the expression for the given value of the variable. \(a-7\) when \(a=10\)

Which number is less than \(-0.1 ?\) F) \(-10\) G) 0 H) 0.001 J) 10

Which of the following is not a term of the expression \(-12 x-2 y+1 ?\) A. \(-12 x\) B. \(2 y\) C. \(-2 y\) D. 1

Find the sum. $$ 8+(-4) $$

Write the sentence as an equation or an inequality. Let x represent the number. 9 is equal to a number decreased by 21.

Use the distributive property and mental math to simplify the expression. $$ -9(1.02) $$

Evaluate \(9(-x)^{2}(-2)\) when \(x=3\). F) \(-162\) G) \(-108\) H) 108 J) 162

Evaluate the expression for the given value of the variable. \(3 y\) when \(y=0\)

Which set of numbers is in increasing order? A) \(-1.9,1.8,-0.5,0,0.5\) B) \(-1,9,-0,5,0,0,5,1,8\) C) \(0,-0.5,0.5,1.8,-1.9\) D) \(-0.5,0,0.5,1.8,-1.9\)

For a correct answer on a game show, a positive amount is added to a player's score. For an incorrect answer, a negative amount is added. If a player has a score of \(-100\) and incorrectly answers a 300 point question, what is the player's new score? F. \(-400\) G. \(-200\) C. 200 D. 400

Find the sum. $$ -3+(-3) $$

Write the sentence as an equation or an inequality. Let x represent the number. The product of 2 and a number is greater than or equal to 7.

Use the distributive property and mental math to simplify the expression. $$-2(11.05)$$

Use mental math to solve the equation. \(6+c=8\)

Evaluate the expression for the given value of the variable. \begin{equation} (t)(5) \text { when } t=15 \end{equation}

Find the area of the object. The top of a computer desk measures 2 feet by 2 feet.

Evaluate the expression. $$ 9-2 \cdot 2-3 $$

Find the sum. $$ 6.5+(-3.4) $$

Write the sentence as an equation or an inequality. Let x represent the number. 3 is the quotient of a number and \(-6\)

Use the distributive property and mental math to simplify the expression. $$ -8(2.80) $$

Use mental math to solve the equation. \(x-7=4\)

Evaluate the expression for the given value of the variable. \begin{equation} \frac{z}{2} \text { when } z=8 \end{equation}

Find the area of the object. The cover of a children’s book is 4 inches long and 4 inches wide.

Find the sum. $$ -9.7+(-4.4) $$