Both meters and centimeters are units of length. The unit of meters is meters and the unit of centimeters is centimeters. 1m is equal to 100cm. Besides meters and centimeters, there are kilometers, decimeters, dm and millimeters, where 1km is equal to 1000m and 1m is equal to 10mm. The unit conversion of centimeters is as follows:1cm =10 mm = 0.1decimeter =0.0 1 m =0.0000 1 km.

The definition of rice originated in France. The length of 1 meter was originally defined as one ten thousandth of the distance from the equator of the earth to the north pole on the meridian passing through Paris, and then the international meter origin was determined. With the deepening of people's understanding of measurement, the definition of the length of meter has been revised several times.

Correctly understand the unit of length

To understand the length unit, we must first understand its superior conceptual unit. The definition of "unit" in Modern Chinese Dictionary is: the name of the standard quantity to measure things. In measurement, a certain kind of quantity is taken as a reference quantity to determine how many times the known quantity is equivalent to the reference quantity, which is called a unit. For example, centimeter is the unit for measuring length, gram is the unit for measuring mass, and second is the unit for measuring time. As an example of mathematics, it can also be said that 1 is the unit of natural number, and the fraction with the numerator of 1 is the unit of fraction.

When measuring the length of a line segment, you need to select a line segment as the measurement standard and specify its length as 1, which is called the length unit. There are many units in length, the main unit is meter, and the rest are derived units. When measuring, choose the appropriate length unit according to the actual needs. For example, the length of the runway is in meters, the distance between two cities is in kilometers, and the distance of long jump is in centimeters.