Transcript Document
Today we will review “Measurement” CONFIDENTIAL 1 Let’s Warm up 1) ¼ + ½ = 2) 3/5 – 1/5 = 3) 3/8 + 3/8 = 4) 5/8 – 10/16 = CONFIDENTIAL 2 Customary Units of Length Nonstandard units of measure give approximate dimensions. Everyday objects are used as units of measure. It can be used to measure length, height and width. Length: The measurement of distance between 2 endpoints. The length of my arm is 18 inches Height: The measurement of distance from bottom to top. The desk is as long as 6 of my hands Her height is 68 inches Width: The measurement of distance from side to side. The width of the stripe is 2 inches CONFIDENTIAL 3 Try This! Use your hands to find the length of the computer monitor Use nonstandard units to measure the length of a pencil CONFIDENTIAL 4 Explore Customary Length to ¼ inch An inch (in.) is used to measure short lengths in the customary system. You can use a ruler, yardstick or tape to measure in inches. 0 1 2 CRAYON CONFIDENTIAL 3 1 3 in. 4 5 Explore Customary Length to ¼ inch The foot (ft) and yard (yd) are used to measure larger units in the customary system. 1 yd 1 ft CONFIDENTIAL 6 Explore Customary Length to ¼ inch Customary Units of Length 1 foot (ft) = 12 inches (in.) 1 yard (yd) = 3 feet (ft) 1 mile (mi) = 1,760 yards (yd) 1 mile (mi) = 5,280 feet (ft) CONFIDENTIAL 7 Try This! Measure the length of your forearm Measure the length of a book CONFIDENTIAL 8 Customary Units of Capacity Capacity: A measure of a dry or liquid volume of a container. The container has a capacity of 1 gallon A coke drink is about 12 fluid ounces. A regular cup of coffee is about one cup. A can of oil for the car is about one quart. A large milk container is about a gallon. Customary Units of Capacity 8 fluid ounces (fl. oz) = 1 cup (c) 2 cups (c) = 1 pint (pt) 2 pints (pt) = 1 quart (qt) 4 quarts (qt) = 1 gallon (gal) CONFIDENTIAL 9 Try This! What unit would you use to measure the capacity for each? A bathtub A soup bowl A paper cup CONFIDENTIAL 10 Customary Units of weight Weight: A customary measurement that tells how heavy an object is. The dog’s weight is 12 pounds A strawberry’s weight is 1 ounce (oz) A pineapple’s weight is 1 pound (lb) A car’s weight is 1 ton (T) Customary Units of Weight 16 ounces (oz) = 1 pound (lb) 2,000 pounds (lb) = 1 ton (T) CONFIDENTIAL 11 Try This! What unit would you use to measure the weight for each? A math book An elephant A paper napkin CONFIDENTIAL 12 Simple conversions with Customary Units Convert: Change from one unit to another, such as from feet to inches. Change Larger to Smaller units To change to a smaller unit, multiply. Example: How many inches are in 6 feet? 12 inches = 1 foot 6 feet = 6 x 12 = 72 inches Change Smaller to Larger units To change to a smaller unit, divide. Example: How many feet is 48 inches? 1 foot = 12 inches 48 inches = 48 ÷ 12 = 4 feet CONFIDENTIAL 13 Try This! How many quarts is 4 gallons? How many pounds is 560 ounces? CONFIDENTIAL 14 Simple Conversion Tables Cups Pints 1 2 1 24 2 4 2 36 3 6 3 48 4 8 4 60 5 10 5 72 6 12 6 84 7 14 7 96 8 16 8 108 9 Inches Feet 12 Yards 1 2 3 Feet Yards Miles 5,280 1,760 1 10,560 3,520 2 15,840 5,280 3 CONFIDENTIAL Quarts Gallons 1 2 3 4 Ounces Cups 8 1 16 2 24 3 32 4 40 5 48 6 1 Pounds 1 2 3 15 Metric Units of Length Centimeters (cm), millimeters (mm), decimeters (dm), and kilometers (km) are used to measure length in the metric system 1 cm 1 mm Metric Units of Length 10 millimeters (mm) = 1 centimeter (cm) 10 centimeters (cm) = 1 decimeter (dm) 100 centimeters = 1 meter (m) 1,000 meters = 1 kilometer (km) 1 dm CONFIDENTIAL 16 Estimate Estimate: An answer that is close to the exact answer. 12 x 779 = 9,348 12 x 800 = 9,600 Estimate Estimate is used to get an idea of how large the object is; to pick appropriate units CONFIDENTIAL 17 Try This! Estimate and then measure. Tell what unit and tool you use. The width of your room The largest step you can take CONFIDENTIAL 18 Metric Units of Capacity Capacity: A measure of a dry or liquid volume of a container. Metric Units of Capacity 1,000 milliliters (mL) = 1 liter (L) Ounces are customary units of measurement Milliliters are metric units CONFIDENTIAL 19 Try This! Estimate and then measure the capacity of each object. A juice box A spoon CONFIDENTIAL 20 Metric Units of Mass Mass: Amount of matter an object has. The mass of a math book is 1 kilogram. Metric Units of Mass 1,000 grams (g) = 1 kilogram (kg) Customary Units are used in US Metric Units are used by most countries CONFIDENTIAL 21 Try This! Estimate and then measure the mass of each object. A bicycle A pair of sneakers CONFIDENTIAL 22 Convert Metric Units Metric Units Length 1 centimeter (cm) = 10 millimeters (mm) 10 centimeters (cm) = 1 decimeter (dm) 10 decimeters (dm) = 1 meter (m) 1,000 meters (m) = 1 kilometer (km) Mass 1 kilogram (kg) = 1,000 grams (g) 1 gram (g) = 1,000 milligrams (mg) Capacity 1 liter (L) = 1,000 milliliters (mL) CONFIDENTIAL 23 Convert Metric Units Change Larger to Smaller units To change to a smaller unit, multiply. Example: How many centimeters are in 10 meters? 1 m = 100 cm 10 meters = 10 x 100 = 1,000 cm Change Smaller to Larger units To change to a smaller unit, divide. Example: How many kilograms are in 5,000 grams? 1,000 g = 1 kg 5,000 ÷ 1,000 = 5 CONFIDENTIAL 24 Try This! 5 m = __ cm 5,000 g = __ kg CONFIDENTIAL 25 Let us take a break! CONFIDENTIAL 26 Game Let us see how fast you are on this one! Click me CONFIDENTIAL 27 Assessment 1. Use nonstandard units to measure. Tell what units you use. The length of your pencil 2. The length of your shoe 1. 2. Use customary units to measure. Tell what unit and tool you use. Length of your forearm 2. Width of the window in your room 1. 3. 4. 5. What unit you will use to measure the capacity of a frying pan. What unit would you use to measure the weight for eyeglasses. How many pounds is 2 tons? CONFIDENTIAL 28 Assessment 6. 7. Alberto makes 8 quarts of punch. How many gallons does he have? Estimate and then measure using the metric system. Tell what unit and tool you use. 1. 8. 9. 10. Your height Estimate and then measure using the metric system the capacity of a can of soda. Estimate and then measure using the metric system the mass of a granola bar. How many milliliters are in 3 Liters? CONFIDENTIAL 29 Good Job! You have learned a lot today!!! CONFIDENTIAL 30