1. Unit 8-1 Units of Measure and conversionsUnits of Measure and conversions

2. What are the units of measure??? Metric Units of LengthCustomary Units of Legth Metric Units of LengthCustomary Units of Legth 1 kilometer = 1000 meters1 foot = 12 inches 1 kilometer = 1000 meters1 foot = 12 inches 1 meter = 100 centimeters1 yard = 3 feet 1 meter = 100 centimeters1 yard = 3 feet 1 centimeter=10 millimeters 1 mile = 5280 feet 1 centimeter=10 millimeters 1 mile = 5280 feet To convert to a smaller unit of measure----Multiply To convert to a smaller unit of measure----Multiply To convert to a larger unit of measure ---- Divide To convert to a larger unit of measure ---- Divide To use dimensional analysis, multiply by the ratio of the units To use dimensional analysis, multiply by the ratio of the units

3. Changing units of measure between systems Units of Length Customary to MetricMetric to Customary 1 inch = 2.5 centimeters1 centimeter = 0.4 inches 1 yard = 0.9 meters1 meter = 1.1 yards 1 mile = 1.6 kilometers1 kilometer = 0.6 miles

4. What unit do you use? 1. Radius of a tennis ball? ________________________________ 1. Radius of a tennis ball? ________________________________ 2. Length of a notebook (spiral)? ___________________________ 2. Length of a notebook (spiral)? ___________________________ 3. Distance around a school track?__________________________ 3. Distance around a school track?__________________________ 4. Distance around a racecar track? ________________________ 4. Distance around a racecar track? ________________________ 5. Width of a pencil? _____________________________________ 5. Width of a pencil? _____________________________________

5. Example 1 Complete each sentence Complete each sentence 1. 4.2 km = _______ m4. 6600 yds = _______ mi 1. 4.2 km = _______ m4. 6600 yds = _______ mi 2. 13 yds = _______ ft 5. 120 in = _________ ft 2. 13 yds = _______ ft 5. 120 in = _________ ft 3. 17 mm = _______ m 6. 18 ft = __________ yds 3. 17 mm = _______ m 6. 18 ft = __________ yds

6. Example 2 Complete each sentence Complete each sentence 1. 13 in = ________ cm4. 15 m = _________ yds 1. 13 in = ________ cm4. 15 m = _________ yds 2. 5 km = ________ mi5. 10 ft = _________ m 2. 5 km = ________ mi5. 10 ft = _________ m 3. 2000 yds = ________ km 6. 320 cm = _______ ft 3. 2000 yds = ________ km 6. 320 cm = _______ ft

7. Example 3 (word problems) 1. A cereal box is 9 inches tall. How many centimeters tall is the box? 1. A cereal box is 9 inches tall. How many centimeters tall is the box? 2. A cricket field is smaller than a baseball field by 2/3. If the distance from the pitcher to the batter is 60 feet 6 inches (in baseball); how far is the “bowler” from the batter in cricket (using metric units). 2. A cricket field is smaller than a baseball field by 2/3. If the distance from the pitcher to the batter is 60 feet 6 inches (in baseball); how far is the “bowler” from the batter in cricket (using metric units).