Math 7 Unit 4 Review

The water level at Lake Sophia changed  $-1\ \frac{1}{10}$  in.  this year. Next year, it is predicted to change another  $-1\ \frac{2}{5}$   in.  What is the total change that will likely occur in 2 years?

•  $-2\ in$  

•  $-2\ \frac{1}{2\ }\ in$  

•  $2\ \frac{1}{2}\ in.$  

•  $1\ \frac{1}{2}\ in.$  

What is   $\frac{3}{5}$  written as a decimal?

• 0.3

• 0.6

• 0.12

• 1.67

The Dominguez family ate at a restaurant. The cost was $8.08 per person. There are 12 people in the Dominguez family. They gave the server a $14 tip.

What was the total bill, including the tip, for the entire family?

• $176.08

• $34.08

• $264.96

• $110.96

What is the value of the expression?

 $2\ \cdot\ \left(\frac{3}{4}-1\right)\ +\ 0.35$  

• 0.20

• −0.15

• 3.85

• 0.85

A diver descends to a location of  $-50\ \frac{1}{4}$  meters relative to the surface of the water. He then descends another  $10\ \frac{1}{2}$   meters.What is the diver’s final location relative to the surface of the water?

•  $40\ \frac{1}{4}$  

•  $60\ \frac{3}{4}$  

•  $-40\ \frac{1}{4}$  

•  $-60\ \frac{3}{4}$  

 $\left(-3\ +6\right)^2\ \div\ 4.5$  

Solve

• 2

• 6.2

• -2

• 4.1

An adult elephant weighs 3000 lb. A baby elephant weighs one-eighth the weight of an adult elephant.

What is the combined weight of an adult elephant and two baby elephants?

• 1125 lb

• 3750 lb

• 6750 lb

• 3375 lb

Simplify: 

 $\frac{\frac{4}{9}+\frac{1}{4}}{\frac{5}{6}}$  

•  $\frac{7}{36}$  

•  $\frac{5}{6}$  

•  $\frac{1}{6}$  

•  $-\frac{5}{9}$  

Vienna leaves her home and drives  $2\ \frac{1}{2}$  mi north to the bank. When she is finished at the bank, she drives south for  $1\ \frac{3}{4}$  mi to the mall and then drives another  $2\ \frac{1}{4}$ mi south to the gas station. What is the distance between the gas station and Vienna's home?

•  $2$  

•  $2\ \frac{1}{2}\ mi$  

•  $4\ \frac{1}{4}mi$  

•  $1\ \frac{1}{2\ }\ mi$