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2 m = (200) cm 1 m = 100 cm (> 99 cm 31 cm + 12 cm - 5 cm = 38 cm.
The book is about (22) cm wide.
Give you a watch. Kilometer (km) = mile (mile) 1 meter (m) = foot (ft) = yard (yd) 1 centimeter (cm) = inch (in) 1 inch (in) = centimeter (cm) 1 nautical mile (n mile) = kilometer (km) 1 fathom (fm) = 1 yard (yd) = 3 feet (ft) 1 pole (rad) = foot (ft) 1 mile (mile) = kilometer (km) 1 foot (ft) = 12 inches (in) 1 mile (mile) =5280 feet (ft) 1 nautical mile (n mile) = mile
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2 m = (200) cm 1 m = 100 cm (> 99 cm 31 cm + 12 cm - 5 cm = 38 cm.
The book is about (20) cm wide.
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Such as: 2 m = (200) cm 1 m = 100 cm ( 99 cm 31 cm + 12 cm - 5 cm =
The book is about ( ) cm wide .
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Second grade.
The unit of length refers to the basic unit of measuring the distance in space, and it is the basic unit formulated by human beings in order to standardize the length. Its SI unit is "meter" (symbol "m"), and the commonly used units are millimeters (mm), centimeters (cm), decimeters (dm), kilometers (km), meters (m), micrometers (m), nanometers (nm), and so on. Units of length play an important role in various fields.
To understand the unit of length, we must first understand its superordinate concept - the unit. The Modern Chinese Dictionary explains "unit" as the name of a standard quantity for measuring things.
In measurement, a certain quantity of the same quantity is used as the reference quantity, and the number of times the known quantity is equivalent to the reference quantity is determined, and the reference quantity is called the unit.
For example, centimeters are the units of measuring length, grams are the units of measuring mass, and seconds are the units of measuring time. As an example of mathematics, it can also be said that 1 is the unit of natural numbers and a fraction with a numerator of 1 is the unit of fractions.
When measuring the length of a line segment, it is necessary to select a certain line segment as the measurement standard, and specify its length as 1, and call this line segment a length unit. There are many units of length, the main unit is the meter, and the rest are derived units. When measuring, choose the appropriate length unit according to the actual needs.
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The formula for converting the length unit in the second grade is as follows:
1 km = 1000 m 1 m = 10 dm 1 dm = 10 cm.
1 cm = 10 mm 1 m = 100 cm 1 m = 1000 mm.
Length is a measure of one-dimensional space. Length is commonly used in kilometers (km), meters (m), decimeters (dm), centimeters (cm), millimeters (mm), microns (um), etc.
Length unit conversion is a smooth passage:
Large, small, move to the right, the advance rate has a few "0", just move a few points.
Small, large, to the left, the advance rate has a few "0", just move a few points.
Meters, meters, meters, is the boss, decimeter decimeter is the second, centimeter centimeter is the third, millimeter millimeter is the fourth.
How much bigger is the rice than the rice? is tenfold;
The decimeter is larger than the centimeter, and how much larger it is, and it is ten times larger;
Centimeters are bigger than millimeters, much larger, and ten times larger.
Length unit conversion is a way of length conversion. The unit of length refers to the basic unit of measuring the distance in space, and it is the basic unit of measurement formulated by human beings in order to standardize the length.
At present, there are many types of length units in the world, including Chinese traditional length units, international standard length units, imperial length units, astronomical length units, etc.
The traditional length units in China include li, zhang, ruler, etc. In the International System of Units, the standard unit of length is the meter, which is denoted by the symbol "m". These units of length are all metric units.
A few European and American countries, mainly the United Kingdom and the United States, use imperial units, so the length units they use are different, mainly miles, yards, feet, and inches. In astronomy, "light year" is often used as a unit of length, which is the distance traveled by light in a vacuum for 1 year, so it is also called a light year.
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The most common units of <> length are kilometers (km), meters (m), decimeters (dm), centimeters (cm), and millimeters (mm), and the conversion relationship between them is:
1 kilometer (km) = 1000 meters (m), 1 meter (m) = 10 decimeters (dm).
1 kilometer (km) = 1000 meters (m) = 10000 decimeters (dm) = 1000 00 centimeters (cm) = 1000 000 millimeters (mm).
1 meter (m) = 10 decimeters (dm) = 100 centimeters (cm) = 1000 millimeters (mm).
1 decimeter (dm) = 10 centimeters (cm) = 100 millimeters (mm) 1 centimeter (cm) = 10 millimeters (mm).
1 li = 150 zhang = 500 meters. Senshin.
2 li = 1 km (1,000 m).
1 zhang = 10 feet, 1 foot = 10 inches.
1 zhang = meter, 1 foot = decimeter, 1 inch = centimeter.
1 light-year = light-year).
1pm = 1 10 15m (pats)
1mm = 1 10 6m (megameters).
1km = 1 10 3m (km).
1dm = 1 10 (-1)m (decimeter).
1 cm = 1 10 (-2)m (cm).
1mm=1 10 (-3)m (mm).
1dmm = 1 10 (-4) m (silk meter).
1cmm=1 10 (-5)m
1 m = 1 10 (-6)m (microns).
1nm = 1 10 (-9)m (nm).
1pm=1 10 (-12)m (picomi).
1fm = 1 10 (-15)m (femtom).
1am = 1 10 (-18)m (ami).
Area Unit Conversion.
1 square kilometre = 100 hectares.
1 hectare = 10,000 square meters.
1 square meter = 100 square decimeters.
1 square decimeter = 100 square centimeters.
1 square centimeter = 100 square millimeters.
Volume (volume) unit conversion.
1 cubic meter = 1000 cubic decimeters.
1 cubic decimeter = 1000 cubic centimeters.
1 cubic decimeter = 1 liter.
1 cubic centimeter = 1 milliliter.
1 cubic meter = 1000 liters.
Weight unit conversion.
1 ton = 1000 kg.
1 kg = 1000 grams.
1 kg = 1 kg.
RMB unit conversion.
1 yuan = 10 jiao.
1 jiao = 10 points.
1 yuan = 100 points.
Time unit conversion.
1 century = 100 years 1 year = 12 months.
The big month (31 days) has: 1 3 5 7 8 10 December.
The small months (30 days) are: 4 6 9 November.
28 days in February in ordinary years and 29 days in February in leap years.
There are 365 days in a normal year and 366 days in a leap year.
1 day = 24 hours and 1 hour = 60 minutes.
1 minute = 60 seconds, 1 hour = 3600 seconds.
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