REVIEW: Multiplying and Dividing Rational Numbers

Look at the following equations:

(-0.2)(-0.2) = 0.04

(-0.2)(-0.2) (-0.2) = -0.008

(-0.2)(-0.2) (-0.2)(-0.2) = 0.0016

(-0.2)(-0.2) (-0.2)(-0.2) (-0.2) = -0.00032

Which of the following statements about determining the sign of a product can be made based upon the work? Select the TWO that apply. ​

• When multiplying an even amount of negative numbers, the answer is negative.

• When multiplying an even amount of negative numbers, the answer is positive.

• When multiplying an odd amount of negative numbers, the answer is positive.

• When multiplying an odd amount of negative numbers, the answer is negative.

Solve: (-0.4)(-2)(-0.42)

• -3.36

• 3.36

• -0.336

• 0.336

Determine the value of the following expression: 

 $\frac{7}{8}\left(-2\right)\left(-3\right)$  

•  $-5\ \frac{1}{4}$  

•  $5\ \frac{1}{4}$  

•  $\frac{7}{48}$  

•  $-\frac{7}{48}$  

 $Solve.\ \ \left(-\frac{1}{2}\right)\left(4\right)\left(-\frac{1}{6}\right)$  

•  $\frac{1}{3}$  

•  $-\frac{1}{3}$  

•  $\frac{1}{48}$  

•  $-\frac{1}{48}$  

Solve.

2.85(-3.4)

• -1.539

• 1.539

• -9.69

• 9.69

Bethany received 5 and 1/2 pounds of candy while trick-or-treating and wants to share it equally among 3 of her friends and herself. 
Which of the expressions below could be used to determine how much candy each person received? Select the TWO that apply.

•  $\frac{5\frac{1}{2}}{4}$  

•  $\frac{4}{5\frac{1}{2}}$  

•  $5\ \frac{1}{2}\div4$  

•  $4\ \div5\ \frac{1}{2}$  

Which division problem can’t be solved?

• $-8\ \div4.5$

• $-7\ \div\ 0$

• $-\frac{7}{8}\div\frac{1}{2}$

• $-4\ \frac{1}{3}\div\ 4$

 $Which\ of\ the\ following\ is\ not\ equal\ to\ -\left(\frac{7}{8}\right)$  

•  $\frac{-7}{8}$  

•  $\frac{7}{-8}$  

•  $\frac{-7}{-8}$  

•  $-\frac{7}{8}$  

 $Solve.\ \ 4\ \frac{2}{9}\div\left(-\frac{1}{3}\right)$  

•  $12\ \frac{2}{3}$  

•  $-12\ \frac{2}{3}$  

•  $1\ \frac{11}{27}$  

•  $-1\ \frac{11}{27}$  

Sara made 5 of her cell phone payments late and was fined 5 late fees. The total change to her savings from late fees was −$56.25.

How much was one late fee?

• -$1.125

• -$11.25

• -$112.5