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

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Presentation on theme: "Unit 8-1 Units of Measure and conversionsUnits of Measure and conversions."— Presentation transcript:

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).


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