1, mm? ), square centimeter (cm? ), square decimeter (dm? ), square meters (m? ): 1 m2 = 100 square decimeter; 1 square decimeter = 100 square centimeter; 1 cm2 = 100 mm2.
2. Conversion between hectares and mu: 1 hectare = 10000 square meters, 1 mu =666.67 square meters.
3. Other commonly used area units: hectares (ha) and square kilometers (km? ), acres, square feet, etc. It should be noted that the international use scope and standards of these units may be different.
Usually, we say how many acres our school covers. Hectares, acres and acres are all used for land area. Hectares are usually used for a larger map area. Acres are metric units and can be simply understood as international units. Mu is a market value unit, which belongs to the measurement name used by the people in China.
Generally, the larger land area is calculated in "square kilometers". For example, the land area of China, or the land area of provinces and cities. Hectares are generally used to calculate the area of land, such as a piece of land with an area of one hectare. The conversion between hectares and square meters is more prone to errors.
Besides hectares, acres and acres are also units of land area. An acre is a piece of land with a length of10m and a width of10m. Then according to the area formula, 1 mu is equal to 100 square meter.
Error-prone transformations:
Contact unit conversion from the third grade. If you want to do the unit conversion correctly, you must remember the conversion formula. For the third-grade pupils, the conversion of area units is very easy to be confused with the conversion of meters, centimeters and decimeters. The conversion between meters, decimeters and centimeters is 10 times. For example, 1 m = 10 decimeter.
When meters, decimeters, centimeters, kilometers plus squares become square meters, square decimeters and square centimeters, the conversion calculation relationship becomes 100 times. For example, 1 m2 = 100 square decimeter, 1 cm2 = 100 square millimeter. The conversion here is also very chaotic. Primary school has not yet learned power, and many times it can only be memorized.