First of all, decimeter
1, decimeter is a unit of length and belongs to metric system. One meter equals ten meters, and one minute equals ten centimeters.
2. The symbol of decimeter is dm, which stands for the abbreviation of decimeter. Deci is a Latin prefix, which means one tenth.
Second, centimeters.
1, centimeter is a unit of length and belongs to metric system. A decimetre equals ten centimeters, and a centimeter equals ten millimeters.
2. The symbol of centimeter is cm, which stands for the abbreviation of "centimeter". Centi is a Latin prefix, which means one percent.
3. cm is often used to measure small objects in daily life, such as pencils, erasers and keys.
Third, rice.
1, meter is a unit of length, which belongs to one of the basic units of the International System of Units (SI).
The symbol of meter is m, which stands for the abbreviation of "meter". Meter is a French word, which comes from the ancient Greek word μ? τ ο ν (metron), which means "measurement".
3. The meter is usually used to measure medium-sized objects or distances, such as tables, doors, rooms and streets.
Fourth, measure the length of the math book.
1. One way is to measure the length of a math book with a ruler or tape measure and read the numbers on the scale.
2. Use the online unit conversion tool, enter the length of the math book, select decimeter as the target unit, and then click the conversion button to get the result.
Mathematics and weights and measures
1, mathematics
Mathematics is closely related to weights and measures, because mathematics can be used to describe and calculate various attributes and relationships of objects. Mathematics can help us understand and master the principles and methods of weights and measures, and also help us to convert and compare different weights and measures systems.
2, weights and measures
Weights and measures can be used to measure and express these attributes and relationships. Weights and measures can also provide rich application scenarios and problem sources for mathematics, and promote the development and innovation of mathematics.