Operations with Rational numbers

The weight of one serving of potato chips is 2.5 ounces. How many servings are there in 22.5 ounces of a family value bag of potato chips.

• 11.5

• 25.0

• 56.25

• 9.0

What is the value of the expression shown above?

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A pharmacist put 4.536 ounces of vitamin pills into bottles. She puts 0.042 ounce of vitamin pills into each bottle. How many bottles did the pharmacist use for these vitamin pills?

• 11

• 5

• 18

• 108

A baby weight 7.25 lb at birth. At the end of 8 months, the baby weighed 2.5 times its birth weight. How many pounds did the baby weigh at the end of 8 months?

• 14.5 lb

• 9.75 lb

• 18.125 lb

• 14.125 lb

A recipe for cookies requires 2/3 cup of butter. Rama wants to make 3/4 of the recipe. How many cups of butter should Rama use to make the cookies?

• 1 5/12 cups

• 8/9 cup

• 1/12 cup

• 1/2 cup

A grocery store sells steak for $6.10 per pound. What would be the cost of 2 ³/₅ lb of steak?

• $14.03

• $8.70

• $15.86

• $12.06

A package of 8 pens cost $0.96. What is the cost per pen?

• $0.12

• $0.11

• $0.10

• $0.20

Beth earns $12.40 per hour. On Monday, she worked a total of 5 ³/₄ hours. What is the total amount that Beth earned on Monday?

• $65.72

• $18.15

• $65.10

• $71.30

Hector bought 2.62 pounds of apples. The apples cost $2.16 per pound. What was the total cost of Hector's apples?

• $6.15

• $4.79

• $5.67

• $5.02

Which expression is equivalent to the expression above?

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