What is the difference between singular and plural numbers? The conversion process between singular

The difference is: 1. The number that only contains a single name is called a single name, such as 7 zhang, 10 square centimeters i rice, 2 catties, etc.

2. A unit of measurement containing two (or more) quantities of the same kind.

The number of names in a name is called a plural number. For example, 5 acres and 6 points, 2 yuan, 4 jiao 6 points, 8 cubic meters and 24 cubic decimeters, etc., in production and life, users often have to mutualize the number of names. For example, it is common to convert the number of single names of a high-level unit into the number of a single number of a low-level unit, and to aggregate the number of a single number of a low-level unit into the number of a single number of a high-level unit, and so on.

Such as 12 square decimeters, 1200 square centimeters.

Extended information: 1. The number of multiple names is changed to the single number of senior units, and the senior units of the number of multiple names remain unchanged, only the low-level units of the number of multiple names are divided by the advance rate, and then the high-level units of the number of multiple names are added.

2. Change the number of multiple names to the single number of low-level units, multiply the high-level units of the number of multiple names by the advance rate, and add the low-level units of the number of multiple names.

3. When converting the unit of a single number, if it is a large unit converted to a small unit, multiply it by the advance rate between it, and divide it by the advance rate between if it is a small unit converted to a large unit.

The difference between singular number and compound number is that singular number refers to the quantity containing one unit, such as 1 meter, 2 hours, 500 kilograms, etc.; The number of multiple names refers to the quantity containing two or more units, such as 2 hours and 40 minutes, 1 meter 3 decimeters, 3 tons and 80 grams, etc.

Number + Unit Name = Number of Names.

A unit with only one unit name is called a singular number.

Those with two or more unit names are called compound names.

The number of advanced units is such as changing the meter to the centimeter.

The number of low-level units is like changing centimeters to meters.

Single number, e.g., 5 hours, 3 kg (only one unit) multiple number, e.g., 5 hours and 6 minutes, 3 kg 500 g (two units).

In English, there are countable nouns and uncountable nouns, which not only have their own rules of change, but also have grammar to be found in sentence patterns!

Conversion method from singular to complex number: divide by the advance rate. Conversion method from multiple names to singular names:

Multiplication rate. Number of single names + number of single names = number of single names or = number of multiple names For example: 200 kg + 300 kg = 500 kg number of single names 600 kg + 700 kg = a ton of 300 kg of multiple names, the number of names with a unit name is called the number of single names, and 500 kg is the number of single names.

The number with the name of two or more units is called the number of multiple names, and one ton of 300 kilograms is the number of multiple names.

1. Rewriting of the number of singular names and the number of singular names1. The number of high-level units The number of low-level units.

For example: m ( cm m ( m (480) cm2, the number of low-level units The number of high-level units.

Example: 4608 g ( kg 4608 1000 4608 g ( kg.

Summary: High-level units into low-level units: Advancement rate Low-level units into high-level units: Advancement rate (high-level low multiplied by advance, low-high divided by advance).

2. The number of singular names and the number of multiple names are mutualized1. Single-name numerization of multiple names.

The number of singular names is the same as the high-level unit of the number of multiple names:

The integer part is written before the high-level unit.

The decimal part multiplied by the rate of advance is written before the lower-level unit.

Example: square decimeter ( square decimeter ( ) square centimeter integer part is 5 decimal part is.

square decimeter (5) square decimeter (25) square centimeter.

The number of singular names is the same as the low-level unit of the number of multiple names:

Number of single names Advancement rate.

The integer part is written before the high-level unit.

The remainder is written before the lower-level unit.

Example: 40080 kg ( t ( ) kg.

The integer part is 40 and the remainder part is 8

40080 kg (40) tons (80) kg.

2. Compound name numbering single name.

The high-level unit of the number of multiple names is the same as the number of single names:

The number of low-level units + the number of high-level units.

Example: 3 yuan and 4 jiao ( yuan.

3 yuan and 4 jiao (yuan.

The low-level unit of the number of multiple names is the same as that of the number of singular names:

The number of advanced units + the number of lower units.

8 m 15 cm ( cm.

8 m 15 cm (815) cm.

(singular number) 1

First decomposed, the integer part is the number on the same unit, and the decimal part is reduced to the number on the lower unit.

Compound number) 2 is decomposed first, the number on the high-level unit becomes the number on the same unit of the integer part, and the number on the low-level unit is reduced to the decimal part.

From the number of singulars to the singularities of low-level units:

For example, 3 meters = 30 decimeters.

From the number of singular names to the number of multiple names of low-level units:

For example, meters = 3 meters and 2 decimeters.

From the number of multiple names of high-level units to low-level units, to the number of singular names:

For example, 4 meters 5 decimeters = meters.

Wind and rain.

Learn to cross the sea in the same boat.

Something you talk about.

A plural number is a number of names with two or more units of measure names. For example: 3 yuan and 5 jiao, 4 hours and 15 minutes, 8 meters and 6 decimeters, 6 hours and 18 minutes, 8 kilograms and 80 grams, etc. are all compound names. A number with the name of the unit of measurement is called a noun number.

Classification: 1. Decimal compound number: If the advance rate between two adjacent units of measurement is ten, then the compound number containing the name of such a unit of measurement is called the decimal compound number. For example, 8 cm 7 mm.

2. Non-decimal compound number: If the advance rate between two adjacent units of measurement is not ten, then the compound number containing the name of such a unit is called a non-decimal compound number. For example: 8 minutes and 26 seconds, 1 hour and 18 minutes, etc.

Number + Unit Name = Number of Names.

The number of names with the name of a unit is called the number of singular names. For example: 3 meters, 500 kilograms, 18 tons, etc. are the single number;

The number of names with two or more unit names is called the number of compound names. For example: 3 meters 10 cm, 5 tons 80 kg, etc. are the number of multiple names.

The number with the name of a unit is called the number of single names, and three tons is the number of single names;

The number of compound names refers to the number of names containing two or more names of the same unit of measurement, such as 5 meters 76 cm, 3 hours and 15 minutes, etc., which are divided into decimal compound names and non-decimal compound names;

If the advance rate between two adjacent units of measurement is ten, then the compound number containing the name of such a unit of measurement is called a decimal compound number, e.g. 8 cm 7 mm;

If the advance rate between two adjacent slippery units of measurement is not ten, then the compound number containing the most monomorphic envy name of such a count is called the non-decimal compound sail number. For example: 8 minutes and 26 seconds, 1 hour and 18 minutes, etc.