Multiply and Divide Rationals: Play Answer Sheet

Transcription

1 Name Date Multiply and Divide Rationals: Play Answer Sheet Selected-Response Items Indicate the letter(s) only Fill-in-the-Blank Items (a) (a). (a) 4. (a) (c). Discovery Education Techbook Discovery Communications, LLC

2 Multiply and Divide Rationals: Play Number of Questions: Questions are selected-response questions. Write the letters of the correct answers on the answer sheet.. Paula is copying her picture files to a backup hard drive. The table shows the total file size, in gigabytes, left to be copied after each minute. Time (min) Total Remaining File Size (Gb) Which statements describe how fast the files are copying? Select all that apply. A. An average of 0. gigabytes transfer each minute during the first 4 minutes. B. The remaining file size changes at a rate of 0.2 gigabytes per minute. C. The files transfer fastest between and 2 minutes. D. The files transfer slowest between 2 and minutes. 2. Bryan makes a snowman. When he is done, the snowman is The snowman s height changes by foot per day. 2 When will the snowman be less than 2 feet tall? feet tall. A. by the end of the th day B. by the end of the 6th day C. by the end of the th day D. by the end of the 2th day. The city of Venice, Italy, is slowly sinking, due to the unstable foundation on which it is built. The city loses about 0.08 inches of height relative to the current sea level each year. In addition, the sea levels themselves are rising at a rate of about 0.04 inches per year. If you put a mark on a building an inch above the current sea level today, in approximately how many years would the mark be at sea level? Assume that rate of sinking and sea level rise stay the same. A. 8.4 yr B. 2.9 yr C yr D yr E yr Discovery Education Techbook Discovery Communications, LLC

3 4. Mia borrowed $800 from her brother to start a small business. She applies to sell her products at a vendor fair. The vendor fair requires all businesses to pay a $0 entry fee, plus 0% of their sales. If Mia sells $,00 worth of products at the fair, how much money will she earn in total, after paying the vendor fees and repaying her brother's loan? A. $200 B. $200 C. $9 D. $9. Ellie buys 48 stair steps for a total cost of $,08. The steps are in boxes that each contain 8 steps and each box costs the same amount. If 2 of the boxes get left out in the rain and ruined, how much money will Ellie need to replace the 2 boxes? Assume that the price of each box is the same as Ellie originally paid. A. $28 B. $2 C. $46 D. $82 Questions 6 are fill-in-the-blank questions. Write the correct answers in the spaces provided on the answer sheet. 6. The Chocolate Factory uses two different machines to create its Mini Morsels. The first machine extrudes bars of chocolate that are each 0 2 inches in length. Each bar is transported on a conveyor belt to the chocolate chopping machine, where it is cut into 2 bite-size chunks. If each Mini Morsel is square, how wide is each chocolate bar? Write your answer as a fraction in simplest form. in.. Beth monitors the status of water levels in different reservoirs around Colorado. The table shows the water level changes for lakes for the last 0 days. Lake Level Change (in.) Crawford 4.2 John Martin 28.6 Rifle Gap 4.6 Vega 6.92 Silver Jack Use the data in the table to complete the statement. Round to the nearest hundredth. By how much did the height of the water in the average lake change per day, according to Beth s data? in. Discovery Education Techbook Discovery Communications, LLC 2

4 8. A recipe for brownies calls for 4 cup of sugar. Skylar has a bag that contains 9 2 cups of sugar. Exactly how many batches of brownies can Skylar make with this one bag of sugar? Express your answer as a mixed number. batches of brownies 9. Quinn uses a band saw to chop a How many whole (a) sections 4 -inch pipe into 8 -inch sections can be cut from the How much pipe will Quinn have left that cannot be cut into a in. 8 -inch sections. 4 -inch pipe? 8 -inch piece? 0. Brandon and Kevin both made the All-State Basketball team. Brandon averaged 2.2 points per game in 6 games. Kevin averaged 20. points per game in 8 games. How many more total points did Kevin score than Brandon? points. Sean is attempting to run 0 miles this month to prepare for a 6.2-mile race. So far, he has run.9 miles, according to the app on his phone. If Sean's average pace is 0.8 minutes per mile, how much more time will it take for him to complete his 0-mile goal? min 2. Heather, Melinda, and Lyndsie are preparing their backpacks for a day hike. The table shows the weights, in pounds, of different items each girl packed. Hiker Water & Snacks Weather Protection Backpack & Camera Heather Melinda Lyndsie Order the weights of the girls' packed backpacks from lightest to heaviest: A. Heather B. Melinda C. Lyndsie Lightest: (a) Middle: Heaviest: (c) Discovery Education Techbook Discovery Communications, LLC

5 . Rafael is getting price estimates from moving companies. Company A will charge $,2 to move an office of 900 square feet. Company B will charge $,488 to move an office of,200 square feet. Company C will charge $2,06 to move an office of,600 square feet. Company D will charge $,2 to move an office of 2,00 square feet. Which company has the least expensive price per square foot? Which company has the most expensive price per square foot? A. Company A B. Company B C. Company C D. Company D Least expensive: (a) Most expensive: 4. A grocery store offers discounts on certain items each week with a minimum gasoline purchase. Grace purchased five items with the per-gallon gasoline discount shown in the table. Item Regular Price Discount per Gallon of Gas Purchased Gallon of milk $.8 $0.0 6-ounce salad $2. $0.04 box of protein bars $4. $0.2 8-ounce bag of nuts $.0 $0.08 package of yogurt $.89 $0.06 Classify each item as having a sale price of more than $2.0 or less than $2.0 with a -gallon gas purchase. A. gallon of milk B. 6-ounce salad C. box of protein bars D. 8-ounce bag of nuts E. carton of yogurt Less than $2.0: (a) More than $2.0:. John's bank notified him that he had a negative checking account balance of $2.0. If John makes two deposits of $89.2 each, what will his new checking account balance be? $ Discovery Education Techbook Discovery Communications, LLC 4