1. conversion of length unit: conversion of centimeter and meter: 1 meter = 100 centimeter; 1cm = 0.0 1m, for example: 5m = 500m300 = 3m. Conversion between centimeters and millimeters:1cm =10 mm; 1mm = 0. 1cm； For example: 20mm = 2cm, 5 cm = 50 mm. Meter-kilometer conversion: 1 km =1000m; 1 m =0.00 1 km.
Conversion from square centimeter to square meter: 1 square meter = 10000 square centimeter; 1 cm2 =0.000 1 m2。 For example: 2 square meters =20000 square centimeters, 5000 square centimeters =0.5 square meters. Conversion between square meters and hectares: 1 hectare = 10000 square meters; 1 m2 =0.000 1 hectare. For example: 3 hectares = 30,000 square meters, 5,000 square meters =0.5 hectares.
Conversion of liters and milliliters: 1 liter = 1000 ml; 1ml = 0.00 1l。 For example: 2 liters =2000 ml, 500 ml =0.5 liters. Conversion of liters and milliliters: 1 m3 = 1000 cubic decimeter; 1 cubic decimeter = 1000 cubic centimeter; 1 cubic centimeter =0.00 1 cubic decimeter. For example: 2 cubic meters = 2,000,000 cubic centimeters, 3,000 cubic centimeters =3 cubic decimeters.
Importance of unit conversion:
Convenient calculation: In daily life and work, we need to carry out various calculations, such as distance, weight and volume. Different physical quantities have different units of measurement. If there is no unit conversion, we need to manually convert the unit during calculation, which will increase the difficulty and complexity of calculation. Mastering unit conversion can make our calculation more convenient and improve the accuracy and efficiency of calculation. ?
Reduce errors: In the process of data processing, if different units are used for calculation, it may lead to errors in the calculation results. For example, one person uses kilograms as the unit when calculating weight, and another person uses grams as the unit, so the calculation results of the two people may be different. Through unit conversion, errors can be reduced and calculation accuracy can be improved.
Deepen the understanding of physical quantities
Mastering unit conversion can help us to understand the relationship between various physical quantities more deeply. For example, by studying the conversion of length units, we can understand the relationship between different length units, such as the conversion between centimeters and meters, meters and kilometers, so as to understand the concept of length more deeply.