Metric Conversions Lesson 1.4 Core Focus on Ratios, Rates and Statistics.

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Presentation transcript:

Metric Conversions Lesson 1.4 Core Focus on Ratios, Rates and Statistics

1.Roger has 6 green olives and 4 black olives. a)Write the ratio of Roger’s green olives to his black olives. b)Write the ratio of Roger’s green olives to his total number of olives. 2.Complete each conversion. a)18 inches = _____ feet b)2 tons = _____ pounds Warm-Up 1.5 4,000

Metric Conversions Convert metric measurements. Lesson 1.4

Good to Know! The metric system of measurement is used all over the world. The metric system is a base-ten, or decimal, system of measurement.  Meter: defines metric units of length.  Gram: defines metric units of mass.  Liter: defines metric units of volume. The prefix measurement relates the unit to a meter, gram or liter.

Choose a reasonable estimate. Explain your reasoning for each choice. a.weight of paperclip: 1 gram or 1 kilogram 1 gram. It is helpful to estimate the weight of 1 gram by thinking of 1 gram as the weight of a paperclip. b.length of van: 4 kilometers or 4 meters 4 meters. A meter is a little longer than a yard which is three feet. So 4 meters is slightly longer than 12 feet. c.water in a personal water bottle: 1 milliliter or 1 liter 1 liter. One liter could be the size of a large personal water bottle. A drop of water would be a good estimate for 1 milliliter. Example 1

Using the information in the conversion table, find the number of centimeters in 60 millimeters. Each pair of millimeter and centimeter values show the ratio of millimeters to centimeters. Choose any ratio and write it as a fraction. Simplify the ratio, if needed. Find an equivalent ratio with 60 millimeters. There are 6 centimeters in 60 millimeters. Example 2 millimeters centimeters1235?

Complete the conversion. a.2 kilometers = ________ meters Find the conversion factor.1 kilometer = 1000 meters Multiply 2 kilometers by 1,000.2  1000 = kilometers = 2,000 meters. Example 3 When converting from one metric unit to another, you will multiply or divide by 10, 100, 1000, …

Complete the conversion. b.3.9 kilogram = ________ grams Find the conversion factor.1 kilogram = 1000 grams Multiply 3.9 kilograms by 1,  1000 = kilograms = 3,900 grams. Example 3 Continued…

Complete the conversion. c.4,000 meters = ________ kilometers Find the conversion factor.1 kilometer = 1000 meters Divide 4,000 meters by 1,  1000 = 4 4,000 meters = 4 kilometers. Example 3 Continued…

Complete the conversion. d.650 centimeters = ________ meters Find the conversion factor.1 meter = 100 centimeters Divide 650 centimeters by  100 = centimeters = 6.5 meters. Example 3 Continued…

How does the prefix on a metric unit help you determine the size of the metric unit? Communication Prompt

Complete each conversion. 1.8 meters = ________ centimeters meters = ________ kilometers 3.19 kilograms = ________ grams Exit Problems ,000