Multiply Rational Number Word Problems

Keith buys a bag of dog food. The bag contains 16 ½ cups of food. If his dog eats 1 ⅜ cups of food a day, the bag will last _____ days.

Molly has 10 feet of ribbon. She is making ornaments. Each ornament uses 1/5 foot of ribbon. How many ornaments can Molly make?

What operation should you consider using when you read the word OF in a math problem?

• Multiply

• Cartwheel

• Jump

• Run

• -52 ft

• -3.25 ft

• -17 ft

• -9 ft

Darren worked 16 hours last week. This week, he will work 1.3 times as many hours. How many hours will Larry work this week?

• 20.8

• 208

• 2.80

• None of the above

A restaurant chef made 6 3/4 jars of pasta sauce. Each serving of pasta requires 3/4 of a jar of sauce. How many servings of pasta will the chef be able to prepare using the sauce?

• 9 servings

• 5 servings

An acre has 208.7 square feet. How many square feet are in 2 1/2 acres? What operation should you perform?

• Multiply

• Divide

• Add

• Subtract

• The height of a child who grew 3 in each year for 5 years.

• The change in temperature as it decreases 5 degrees every hour for 3 hours.

• The amount of money a snack bar earns for selling 3 sandwiches for $5 per sandwich.

• The change in elevation of a submarine as it sinks 3 m every second for 5 seconds.