Module 4: Operations with Rational Numbers Review

A U.S nickel is 1.95 mm thick. How many centimeters long is a roll of nickels if the entire roll is worth $2? Remember, there is 10 mm = 1 cm.

_______ cm

Nathaniel has 132 DVDs in his collection. Each DVD case has the dimensions shown. He plans to buy shelves for the collection that are 31.5 inches wide and cost $15.75 each. How much will it cost Nathaniel to shelve his DVD collection?

$______

Express your answer as a decimal.

• -0.9583

• 
• -23/24

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Hank has been keeping track of the changes in his savings account for the past few weeks, as shown in the table. Based on this information, what is the total amount that Hank predicts he will save or spend for the whole year? Remember, there are 52 weeks in a year. Round your answer to the nearest cent.

• $346.53 spent

• $1732.64 spent

• $346.53 saved

• $1732.64 saved

Evaluate the expression.

• -1.76

• -25/44

• 25/44

• -4/11

Express your answer as a mixed number in simplest form.

• 
• 15/2

• -15/2

• 

The Amazing Adventures Canoe and Kayak company offers 3 different options as shown in the table. This afternoon a group of 5 friends is paddling the Beginner Trip in individual kayaks. How many total yards will the friends paddle combined? (Hint: 1 mile = 1,760 yards)

_______ yards

The formula for the area of a triangle is A=1/2bh where b is the base of the triangle and h is the height. Find the area written as a decimal and as a fraction or mixed number in simplest form.

• 8.775 inches

• 17.55 inches or 351/20 inches

• 8.775 inches or 351/40 inches

• 8.975 inches or 359/40 inches

What is -1/6(2.6)?

• 
• 
• 
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At the beginning of the month, the level of the Green River was 25.35 feet. The table shows the change in the level of the river after each week.

After 4 weeks, the level of the Green River is _______ feet.