9-2 Understanding Metric Units of Measure Warm Up Warm Up Lesson Presentation Lesson Presentation Problem of the Day Problem of the Day Lesson Quizzes Lesson Quizzes

9-2 Understanding Metric Units of Measure Warm Up Multiply the following by 1, Divide the following by 1, ,

9-2 Understanding Metric Units of Measure Problem of the Day James said he was 5 ft 6 in. tall. His brother’s height is 65 in. Who is the tallest and by how much? James, by 1 in.

9-2 Understanding Metric Units of Measure Learn to understand and select appropriate metric units of measure.

9-2 Understanding Metric Units of Measure Vocabulary metric system

9-2 Understanding Metric Units of Measure The metric system of measurement is used almost everywhere in the world. Its advantage over the customary system is that all metric units are related by the decimal system. Kilometer Meter Decimeter Centimeter Millimeter Unit Width of a single bed1 mm Distance around a city block 1,000 mkm Width of CD case0.1 mdm Width of a fingernail0.01 mcm Thickness of a dime0.001 mmm BenchmarkRelation to a Meter Abbreviation Metric Units of Length

9-2 Understanding Metric Units of Measure Additional Example 1: Choosing Appropriate Units of Length What unit of measure provides the best estimate? Justify your answer. A. A ballpoint pen is about 14 _____ long. Think: A ballpoint pen is about 14 times the width of a fingernail. Think: A football field is about 100 times the width of a single bed. A ballpoint pen is about 14 cm long. A football field is about 100 m long. B. A football field is about 100 _____ long.

9-2 Understanding Metric Units of Measure Check It Out: Example 1 What unit of measure provides the best estimate? Justify your answer. A. A loaf of bread is about 3 _____ long. B. An earthworm is about 5 _____ long. Think: A loaf of bread is about 3 times the width of a CD case. Think: A. earthworm is about 5 times the width of a fingernail. A loaf of bread is about 3 dm long. An earthworm is about 5 cm long.

9-2 Understanding Metric Units of Measure Kilogram Gram Milligram Unit Textbook1,000 gkg Paper clip1 gg Very small insect0.001 gmg BenchmarkRelation to a Gram Abbreviation Metric Units of Mass

9-2 Understanding Metric Units of Measure Additional Example 2: Choosing Appropriate Units of Mass What unit of measure provides the best estimate? Justify your answer. An orange has a mass of about 600 _____. Think: An orange has a mass of about 600 times the mass of a large paperclip. An orange has a mass of about 600 g.

9-2 Understanding Metric Units of Measure Check It Out: Example 2 What unit of measure provides the best estimate? Justify your answer. The Liberty Bell has a mass of about 943 _____. Think: The Liberty Bell has a mass of about 943 times the mass of a textbook. The Liberty Bell has a mass of about 943 kg.

9-2 Understanding Metric Units of Measure Liter Milliliter Unit Water pitcher1 LL Drop of water0.001 LmL BenchmarkRelation to a Liter Abbreviation Metric Units of Capacity

9-2 Understanding Metric Units of Measure Additional Example 3: Choosing Appropriate Units of Capacity What unit of measure provides the best estimate? Justify your answer. An ice cream scoop holds about 100 _____. Think: An ice cream scoop holds the capacity of about 100 times a drop of water. An ice cream scoop holds about 100 mL.

9-2 Understanding Metric Units of Measure Check It Out: Example 3 What unit of measure provides the best estimate? Justify your answer. A large punch bowl holds about 7 _____. Think: A large punch bowl holds the capacity of about 7 times the capacity of a blender container. A large punch bowl holds about 7 L.

9-2 Understanding Metric Units of Measure Additional Example 4: Finding Measurements Use the ruler to measure the length of the line to the nearest centimeter. The line is between 3 and 4 meters. Closer to 4 m than 3 m. The length of the line is about 4 m m 2

9-2 Understanding Metric Units of Measure Check It Out: Example 4 Use the ruler to measure the length of the line to the nearest meter. The line is between 1 and 2 meters. Closer to 1 m than 2 m. The length of the line is about 1 m. 1 m 23 4

9-2 Understanding Metric Units of Measure Standard Lesson Quiz Lesson Quizzes Lesson Quiz for Student Response Systems

9-2 Understanding Metric Units of Measure Lesson Quiz Name the most appropriate unit of measure. 1. A door knob has a diameter of about 7 _____. 2. A ballpoint pen weighs about 3 _____. 3. A gallon of milk is almost 4 _____. 4. Paul estimated the weight of his infant sister to t be 5 _____. g cm L kg

9-2 Understanding Metric Units of Measure 1. Identify the most appropriate unit of measure. The wheel of a bicycle has a diameter of about 60 ___. A. mm B. cm C. m D. km Lesson Quiz for Student Response Systems

9-2 Understanding Metric Units of Measure 2. Identify the most appropriate unit of measure. An adult rabbit weighs about 1 __. A. mg B. g C. kg D. L Lesson Quiz for Student Response Systems

9-2 Understanding Metric Units of Measure 3. Identify the most appropriate unit of measure. A teapot has a capacity of almost 2 ___. A. ml B. g C. L D. kg Lesson Quiz for Student Response Systems

9-2 Understanding Metric Units of Measure 4. Brian estimated the weight of a baseball bat to be 1 ___. A. ml B. g C. L D. kg Lesson Quiz for Student Response Systems