In the international system of units, the standard unit of length is "meter", which is represented by the symbol "m".
Other units of length include megameter (Mm), kilometer (km), decimeter (dm), centimeter (cm), millimeter (mm), silk meter (dmm), Mi Hu meter (cmm), micron (micron), nanometer (nm), picometer (pm), femto meter (fm) and Amy (am).
1Mm= 1× 10^6m
1km= 1× 10^3m
1dm= 1× 10^(- 1)m
1cm= 1× 10^(-2)m
1mm= 1× 10^(-3)m
1dmm= 1× 10^(-4)m
1cmm= 1× 10^(-5)m
1μm= 1× 10^(-6)m
1nm= 1× 10^(-9)m
1pm= 1× 10^(- 12)m
1fm= 1× 10^(- 15)m
1am= 1× 10^(- 18)m
Question 2: What is the decimeter unit? Millimeter, centimeter, decimeter, meter and kilometer are all units of length.
Question 3: What are the events in decimeter? Hello, the unit of tape measure used by construction workers is decimeter. They said centimeters.
Question 4: What is the decimeter in the unit of length? In the international system of units, the standard unit of length is "meter", which is represented by the symbol "m".
Other length units are megameter (Mm), kilometer (km), decimeter (dm), centimeter (cm), millimeter (mm), micron (micron), nanometer (nm) and so on.
Their conversion relationship with rice is as follows:
1Mm= 1× 10^6m
1km= 1× 10^3m
1dm= 1× 10^(- 1)m
1cm= 1× 10^(-2)m
1mm= 1× 10^(-3)m
1μm= 1× 10^(-6)m
1nm= 1× 10^(-9)m
The traditional length units in China are feet, inches, feet and so on. The conversion relationship between them and rice is:
1m = 3 (feet) = 30 (inches) = 0.3 (feet)
Astronomy often uses "light year" as the unit of length, which is the distance traveled by light in vacuum 1 year, so it is also called light year. 1 light year = 9.04653×1012km.
Length unit conversion
1 cm =10mm
1m= 100cm
1km km = 1000m。
1m = 10dDM decimeter =100cm =1000 mm.
1dm decimeter = 10/0cm.
1 cm =10mm
1 mm = 10 micron
1 km = 1 km =1000m.
1 km =2 Li =1000m.
Area unit conversion
1 km2 = 100 hectare
1 ha = 1 10,000 m2
1 m2 = 100 square decimeter
1 square decimeter = 100 square centimeter
1 cm2 = 100 mm2
Volume (volume) unit conversion
1 m3 = 1000 cubic decimeter
1 cubic decimeter = 1000 cubic centimeter
1 cubic decimeter = 1 liter
1 cm3 = 1 ml
1 m3 = 1000 liter
Weight unit conversion
1 ton = 1000 kg
1 kg =1000g
1 kg = 1 kg
Rmb unit conversion
1 yuan = 10 angle.
1 angle = 10 point
1 yuan = 100 integral.
Time unit conversion
1 century = 100 1 year =65438+ February.
The big month (3 1 day) includes:1\ 3 \ 5 \ 7 \ 8 \10 \ 65438+February.
Abortion (30 days) includes: April \ June \ September \165438+1October.
February 28th in a normal year and February 29th in a leap year.
There are 365 days in a normal year and 366 days in a leap year.
1 day =24 hours 1 hour =60 minutes.
1 minute =60 seconds 1 hour =3600 seconds.
Calculation formula of perimeter, area and volume of mathematical geometry in primary schools
1, the perimeter of the rectangle = (length+width) ×2C=(a+b)×2.
2. The circumference of a square = side length ×4C=4a.
3. Area of rectangle = length× width S=ab
4. Square area = side length x side length s = a.a = a.
5. Area of triangle = base × height ÷2S=ah÷2.
6. parallelogram area = bottom x height S=ah
7. trapezoidal area = (upper bottom+lower bottom) × height ÷ 2s = (a+b) h ÷ 2.
8. Diameter = Radius× 2D = 2r Radius = Diameter ÷ 2r = D ÷ 2 ... >; & gt
Question 5: What are the units of millimeter, centimeter and decimeter? It is the second and fourth unit of length.
Question 6: What are the unit lengths and distances of meters, decimeters, centimeters and millimeters?