The most common units of length are kilometers (km), meters (m), decimeters (DM), centimeters (CM) and millimeters (mm). The conversion relationship between them is as follows:
1 km = 1 000m,1m = 10 decimeter (DM).
1km = 1000m = 10000dm = 100000cm = 100000mm
1 m = 10 decimeter (decimeter =100cm = 1000 mm)
1 decimeter (decimeter) =10cm = 100 mm (mm)
1 cm =10mm
2. Time unit conversion
1 century = 100 1 year = 12 months
Century: the unit for calculating age. A hundred years is a century.
Big month: refers to the month of 3 1 day in the Gregorian calendar. January, March, May, July, August, October and December are all thirty-one days.
Abortion: refers to 30 or 29 days in a month. There were three miscarriages (30 days): April, June, September,165438+1October.
A year without leap days in the solar or lunar calendar, or a year without leap months in the lunar calendar. There are 365 days in the whole year, 366 days in leap year, 28 days in February and 29 days in leap year.
Leap year: A year in which the solar or lunar calendar has a leap day and the yin and yang calendar has a leap month.
1 day = 24 hours 1 hour = 60 minutes
Day: A unit of time based on the earth's rotation period, equal to 86,400 seconds.
Minutes: auxiliary time unit.
1 min = 60s 1 hr = 3600s.
Second: the basic unit of time.
3. RMB unit conversion
Methods: The decimal relationship between RMB units was adopted.
1 yuan = 10 angle.
Yuan: monetary unit. RMB is the legal tender symbol of China people and the mainland. The unit of RMB is yuan, and the unit of RMB token is minutes. The currency symbol of RMB is RMB, for example, 100 yuan, which can be written as 100 yuan (different from Japanese yen) or 100 yuan.
1 angle = 10 point
Angle: monetary unit, one tenth of a dollar.
1 yuan = 100 integral.
: monetary unit, one hundredth of US dollars.
4, weight unit conversion
1t = 1000kg 1t = 100000g
Tonnage: Tonnage is the unit of weight, and metric 1 ton is equal to 1000 kg: the unit for calculating the ship's volume, and 1 ton is equal to 2.83 cubic meters (100 cubic feet).
1 kg = 1 000g500g =1kg
Kg: G (symbol Kg or Kg) is the basic unit for measuring mass in the international system of units. The kilogram is also one of the most commonly used basic units in daily life. One kilogram is defined as the international kilogram, which is almost equal to one liter of water.
1 kg = 1 kg = 2 kg
The kilogram, or kilogram (symbol kg or kg), is the basic unit for measuring mass in the international system of units. The kilogram is also one of the most commonly used basic units in daily life.
5, area unit conversion
1 km2 = 100 hectare
Square kilometer: Square kilometer (symbol km2) is the metric unit of area and is defined as "square area with side length of 1km".
1 ha = 1 10,000 m2
Hectares: The unit symbol of a hectare is "HM2", where HM is a hectare and hm2 is a hectare (square hectare in English), that is, 65,438+00,000 square meters or 65,438+0 hectares.
1 m2 = 100 m2
Square meter: Square meter is the metric unit of area. It is defined as the area of a square with a side length of 1 m. In life, square meters are usually called "square meters" or "square meters". Hongkong and Taiwan Province Province are called "square meters".
1 square decimeter = 100 square centimeter
Square decimeter: Square decimeter (dm2) is the metric unit of area, which is defined as the square area with side length of 1 decimeter.
1 cm2 = 100 mm2
Square millimeter: Square millimeter (with the symbol of mm ㎡) is the metric unit of area, which is defined as "square area with side length of 1mm".
6. Volume conversion unit
cubic metre
Unit of volume: L; ml；
1 m3 = 1000 cubic decimeter; 1 m3 = 1000 cubic centimeter
1L = 1000ml， 1L = 1m3， 1ml = 1m3， 1m3 = 100m3。
1 cubic decimeter = 1000 cubic centimeter; 1 cubic decimeter = 1 liter; 1 cm3 = 1 ml; 1 m3 = 1000 liter