Holt CA Course Customary Measurements Warm Up Warm Up Lesson Presentation California Standards Preview

Holt CA Course Customary Measurements Warm Up Simplify

Holt CA Course Customary Measurements AF2.1 Convert one unit of measurement to another (e.g., from feet to miles, from centimeters to inches). Also covered: NS1.3 California Standards

Holt CA Course Customary Measurements You can use the following benchmarks to help you understand fluid ounces, tons, and other customary units of measure.

Holt CA Course 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

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

Holt CA Course 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 5,000 2,000x = 5,000 5,000 m x x = 2.5 5,000 pounds is equal to 2.5 tons.

Holt CA Course 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.

Holt CA Course Customary Measurements Additional Example 3: Converting Between Metric and Customary Units One mile is about 1.6 kilometers. What is the length in miles of a 10 kilometer race? Round to the nearest tenth of a mile. = miles kilometers x 10 Write a proportion using 1 mile  1.6 kilometers. The length of a 10 kilometer race is about 6.3 miles long. 1.6 · x = 1 · x = x 1.6 = x  6.3 Divide each side by 1.6. The cross products are equal. Multiply. Round to the nearest whole number.

Holt CA Course 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

Holt CA Course 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.

Holt CA Course 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.

Holt CA Course Customary Measurements Check It Out! Example 3 One cup is about 8 fluid ounces. What is the amount in cups of a 35 fluid ounce container? Round to the nearest tenth of a cup. = cups fluid ounces 1818 x 35 Write a proportion using 1 cup = 8 fluid ounces. The amount of a 35 fluid ounce container is about 4.4 cups. 8 · x = 1 · 35 8x = 35 8x88x8 = 35 8 x  4.4 Divide each side by 8. The cross products are equal. Multiply. Round to the nearest whole number.

Holt CA Course 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

Holt CA Course Customary Measurements Lesson Quiz: Part II 4. Convert 13 gallons to quarts. 5. One ounce is about 28.3 grams. A box of cereal has a mass of 400 grams. What is the weight of the box in ounces? Round to the nearest tenth of an ounce oz