4-5 Customary Measurements Warm Up Warm Up Lesson Presentation Lesson Presentation Problem of the Day Problem of the Day Lesson Quizzes Lesson Quizzes

4-5 Customary Measurements Warm Up Simplify

4-5 Customary Measurements Problem of the Day The ratio of the length of U.S. paper currency to its width is about 2.4 to 1. If the length of an actual bill is about 6.2 inches, how wide is a bill? Round your answer to the nearest tenth. 2.6 inches

4-5 Customary Measurements Learn to identify and convert customary units of measure.

4-5 Customary Measurements Weight of 3 applesPound (lb)‏ Weight of a buffaloTon Amount of water in 2 tablespoonsFluid ounce (fl oz)‏Capacity Capacity of a standard measuring cupCup (c)‏ Capacity of a large milk jugGallon (gal)‏ Weight of a slice of breadOunce (oz)‏Weight Length of 4 laps around a trackMile (mi)‏ Length of a standard sheet of paperFoot (ft)‏ Length of a small paper clipInch (in.)‏Length Customary Unit You can use the following benchmarks to help you understand fluid ounces, tons, and other customary units of measure.

4-5 Customary Measurements Additional Example 1: Choosing the Appropriate Customary Unit Choose the most appropriate customary unit for each measurement. Justify your answer. A. the weight of a car tons; The weight of a car is similar to the weight of a buffalo. inches; The diameter of a soup can is similar to the length of a few paper clips. pounds; The weight of a newborn baby is similar to the weight of more than a dozen apples. B. the diameter of a soap can C. the weight of a newborn baby

4-5 Customary Measurements Check It Out: Example 1 Choose the most appropriate customary unit for each measurement. Justify your answer. A. the length of a pen top inch; The length of a pen top is similar to the length of a small paper clip. pounds; The weight of a pitcher of juice is similar to the weight of about 10 apples. cups; The capacity of a jar of peanut butter is similar to the capacity of 2 standard measuring cups. B. the weight of a pitcher of juice C. the capacity of a jar of peanut butter

4-5 Customary Measurements 12 inches (in.)= 1 foot (ft) ‏ 3 feet = 1 yard (yd) ‏ 5,280 feet = 1 mile (mi) ‏ 1,760 yards = 1 mile (mi) ‏ Length 16 ounces (oz) = 1 pound (lb) 2000 pounds = 1 ton Weight 8 fluid ounces (fl oz) = 1 cup (c) ‏ 2 cups = 1 pint (pt) ‏ 2 pints = 1 quart (qt) ‏ 4 quarts = 1 gallon (gal) ‏ Capacity

4-5 Customary Measurements Additional Example 2: Converting Customary Units Convert 5,000 pounds to tons. Method 1: Use a Proportion. = pounds tons 2,000 1 Write a proportion using a ratio of equivalent measures. 2,000 x = 1 5, x = 5,000 5,000 m x x = 2.5 5,000 pounds is equal to 2.5 tons.

4-5 Customary Measurements Method 2: Multiply by 1. = 5,000  5,000 lb =  5,000 lb m 1 Multiply by a ratio equal to 1, and cancel the units. Additional Example 2 Continued Convert 5,000 pounds to tons. 1 ton t 2,000 lb 1 ton t 2,000 = 2.5 tons 5,000 pounds is equal to 2.5 tons.

4-5 Customary Measurements Check It Out: Example 2 Convert 24 pints to cups. Method 1: Use a Proportion = cups pints 2121 Write a proportion using a ratio of equivalent measures. 1 c = 2 24 c = 48 c pints is equal to 48 cups.

4-5 Customary Measurements Method 2: Multiply by 1 = 24  24 pt =  24 pt m1 Multiply by a ratio equal to 1, and cancel the units. Check It Out: Example 2 Continued Convert 24 pints to cups. 2 ct 1 pt 2 c 1 = 48 cups 24 pints is equal to 48 cups.

4-5 Customary Measurements Additional Example 3: Adding or Subtracting Mixed Units of Measure Allison orders a 6-ounce grilled chicken sandwich. Dominic orders a quarter-pound grilled chicken sandwich. Which sandwich weighs more? Explain. = ounces pounds 16 1 First convert a quarter-pound to ounces. x = 4 oz x.25 Write a proportion using 16 oz = 1 lb. Allison’s sandwich weighs more because Dominic’s sandwich is only 4 oz.

4-5 Customary Measurements Check It Out: Example 3 Tedd and Fergie go the hardware store to purchase a bag of nails. Tedd buys a bag of nails that weighs 7 pounds 8 ounces. Fergie buys a bag of nails that weighs 128 ounces. Which bag of nails weighs more? Explain. = ounces pounds 16 1 First convert 7 pounds to ounces. x = 112 oz + 8 oz x7x7 Write a proportion using 16 oz = 1 lb. Fergie’s bag of nails weigh more because Tedd’s bag only weighs 120 oz. x = 120 oz

4-5 Customary Measurements Standard Lesson Quiz Lesson Quizzes Lesson Quiz for Student Response Systems

4-5 Customary Measurements Lesson Quiz: Part I Choose the most appropriate customary unit for each measurement. Justify your answer. 1. the capacity of a bathtub 2. the weight of a calculator 3. the length of an indoor sports arena gallons; similar to the capacity of several large milk jugs too small to measure in miles, so it should be measured in feet ounces; similar to the weight of several slices of bread

4-5 Customary Measurements Lesson Quiz: Part II 4. Convert 13 gallons to quarts. 5. Seth is returning from a 5-mile hike. He passes a trail sign that says, “3,520 feet to base camp.” How many more miles does Seth have to hike?

4-5 Customary Measurements 1.Choose the most appropriate customary unit for the given measurement. Justify your answer. the capacity of an aquarium A. gallons; similar to the capacity of several large milk jugs B. gallons; similar to the weight of several buffaloes C. fluid ounces; similar to the amount of water in several tablespoons D. fluid ounces; similar to the capacity of several standard measuring cups Lesson Quiz for Student Response Systems

4-5 Customary Measurements 2.Choose the most appropriate customary unit for the given measurement. Justify your answer. the weight of a can of soup A. ounces; similar to the capacity of several large milk jugs B. inches; similar to the length of several small paper clips C. ounces; similar to the weight of several slices of bread D. inches; similar to the weight of several apples Lesson Quiz for Student Response Systems

4-5 Customary Measurements 3.Choose the most appropriate customary unit for the given measurement. Justify your answer. the length of a large fish pond A. Too small to measure in miles, so it should be measured in feet B. Too small to measure in feet, so it should be measured in inches C. Too small to measure in miles, so it should be measured in inches D. Too small to measure in feet, so it should be measured in miles Lesson Quiz for Student Response Systems

4-5 Customary Measurements 4. Which of the following represents 17 gallons in quarts? A. 34 B. 51 C. 68 D. 85 Lesson Quiz for Student Response Systems

4-5 Customary Measurements 5. Juan has 5 cups of milk. He adds 16 fluid ounces of water to the milk in order to prepare a recipe. What is the total weight of the mixture before he begins preparing the recipe? A. 4 cups B. 5 cups C. 6 cups D. 7 cups Lesson Quiz for Student Response Systems