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#1 Joanne has 13! yd of material to make costumes. Each complete costume requires 1! yd for the top !

and ! yd for the bottom. How many complete costumes can she make?

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#2 Your friend wrote the reciprocal of 5! as 5!. Explain why your friend is incorrect. What is the correct reciprocal?

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#3 One serving recipe calls for ! c of vegetable oil for a marinade and ! c of oil for the sauce. You have 3 !c of vegetable oil. How many servings can you make?

#4 What positive number is its own reciprocal? What number has no reciprocal? Explain.

#5 Can you use the rule for multiplying by the reciprocal to divide whole numbers such as 10÷2? Explain

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#6 The area of Sally’s garden is 17!square feet. If Sally’s garden is 5 !ft long, how wide is her garden?

#7 The highest annual rainfall on record for the state of Texas was about 109inches in 1873. How many feet of rain did Texas receive that year?

#8 Which is lighter, 12oz of cheese or 1lb of cheese?

#9 You are hiking a 2-mi trail. A sign shows that you have hiked 1,000ft. How many feet do you have left to hike?

#10 People in the United States discard an average of 75,000 t of food per day. If a garbage truck can hold 12,000lb, how many trucks are needed to haul all of the food?

#11 How many cups are in a 12fl-oz can of lemonade?

#12 The length of the Amazon River in South America is about 4,000mi. How many feet is this?

#13 How are the rates “6 pounds per day” and “6 days per pound” different? When would each be useful?