Review Operations with Rational Numbers

Review Operations with Rational Numbers

Objective

Students will apply the properties of operations in order to add, subtract, multiply, and divide rational numbers.

Multiple Choice

-1/3 x 2/5

• -3/8

• 2/15

• -2/15

• -1/15

Multiple Choice

(-4.2)(-5)

• 21

• -21

• -9.2

• -1.2

Multiple Choice

The amount of shore at a beach changes an average of -3/4 feet each year. What is the amount of shore after 7 years?

• 5 1/4

• 3/28

• -3/28

• -5 1/4

Multiple Choice

Multiply. Write your answer in simplest form.

• 27/40
• -27/40
• 5/6
• -5/6

Multiple Choice

A bath tub drains at a constant rate. The amount of water changes by -0.75 gallons in one minute. What is the change in the amount of water in the bathtub after 5 minutes?

• -3.75 gallons

• 375 gallons

• -0.15 gallons

• -37.5 gallons

Multiple Choice

 $Solve:\ \ \ \ \ \frac{8}{9}\div\frac{1}{3}\ =\$  

•  $\frac{24}{9}$  

•  $\frac{9}{27}$  

•  $\frac{9}{24}$  

•  $\frac{3}{4}$  

Multiple Choice

5 ÷ ⅓

• 10

• 8

• 15

• 20

Multiple Choice

 $Solve:\ \ \ \frac{4}{5}\div2\ =\$  

•  $\frac{8}{5}$  

•  $\frac{10}{4}$  

•  $\frac{4}{10}$  

•  $\frac{8}{10}$  

Multiple Choice

 $Solve:\ \ \ \ \ 2\frac{1}{2}\div\frac{1}{4}\ =\$  

•  $\frac{8}{20}$  

•  $\frac{20}{8}$  

•  $\frac{4}{8}$  

•  $\frac{8}{4}$  

Multiple Choice

Which scenario can be represented by 10 ÷ ⅕ ?

• Franny has a piece of ribbon that is 10 inches long.  She cuts it into 5 pieces.
• Franny has a piece of ribbon that is 10 inches long.  She cuts it into pieces that are 1/5 in long.
• Franny has a piece of ribbon that is 1/5 inch long.  She cuts it into 10 pieces.
• Franny has 10 pieces of ribbon.  Each piece is 1/5 inch long.  

Multiple Choice

Solve

• -5 and 3/4

• 5 and 3/4

• 3/4

• -3/4

Multiple Choice

−0.15 − (−0.15) =

• -0.30

• 0.30

• 2.25

• 0

Multiple Choice

What is -3½ - 4½=

• 7½
• 8
• -1½
• -8

Multiple Choice

34.5 + (-7)

• -41.5
• 41.5
• -27.5
• 27.5