Metric Units of Length
Metric units of length, including kilometer, meter, centimeter, and millimeter. Learn how to convert between units and apply the correct measurement scale to various objects. Discover the relationships between prefixes and units, along with rules for converting measurements accurately.
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Presentation Transcript
Choose the appropriate metric unit to measure each item. Choose km, m, cm or mm. 1. Distance from the earth to the moon 2. typical room height 3. width of an adult thumb 4. average depth of ocean 5. length of medium-sized car
The basic unit of length for metric measure is the meter (m) Other commonly used units include the kilometer (km), the centimeter (cm), and millimeter (mm).
METRIC UNITS OF LENGTH WORD SYMBOL MEANING kilometer hectometer dekameter meter decimeter centimeter millimeter km hm da m dm cm mm 1 000 meters 100 meters 10 meters 1 meter 0.1 meter 0.01 meter 0.001 meter
Relationship between the prefixes used to name metric unit. It is important to understand these relationships in order to change values from one metric unit to another. thousand s hundreds tens Ones tenths hundredt hs thousand ths kilo hecto- deka- No prefix deci centi milli kilometer hectomete r dekameter Meter (m) decimeter centimeter millimeter 1 000 m 100 m 10 m 1 m 1/10 m 1/100 m 1/1000 m
Rules are used to change from one metric unit to another. 1.To change from a larger unit to a smaller unit ( moving to the right in the diagram), multiply by a power of ten. Thus, move the decimal point in the given quality one place to the right for each smaller unit until the decimal unit is reached. x10 km hm da m dm cm mm
2. To change from smaller unit to a larger unit ( moving to the in the diagram), divide by a power of ten. Thus move the decimal point in the given quality one place to the left for each larger unit until the decimal unit is reached. km hm da m dm cm mm 10
Complete each to make a true statement. a. To change from m to da, divide by __________. b. To change from hm to dm, _________ by 1 000.
solution 10 ( there are 10 meters in a dekameter.) Multiply ( You multiply when you are changing from a larger unit to a smaller unit.)
Convert each to the indicated unit 15 hm to dm 543 m to km
solution A. to convert from hectometerto decimeter, we start at hectometersand move three steps to the right to obtain decimeters. B. To convert from meters to kilometers, we start at meters and move three steps to the left to obtain kilometers
Customary Units : Length 12 inches ( in) = 1 foot ( ft.) 36 inches (in. ) = 1 yard (yd.) 3 feet (ft .) = 1 yard (yd.) 5 280 feet ( ft.)= 1 mile (mi.)
Complete each. 8 ft = ____in. 144in = ______yd.
TRY THIS Complete each. To Change from m to da, divide by ____. To change from m to mm, multiply by ___. To change from km to da, ____ by 100. 4. 7m = ____cm 5. 2000 mm = ____m 6. 5240 m = ______km 7. 15 ft.= _____in 8. 23 mi. = ____ft. 9. 9 yd= _____m. 10. 42 mm= _____km 1. 2. 3.
Conclusion Identify 3 important concepts that interest you; 2 question that you want to ask; 1 idea that you need clarification.
