Reading and writing methods for large numbers in the fourth grade, reading and writing methods for l

word or "10,000" word. If there is a 0 in the middle of the number or several zeros in a row, only one zero is read, and no matter how many zeros there are at the end of each level.

3.The composition of the number: 308 4000 0860 is composed of 3 tens of billions, 8 billions, 4 millions, 8 hundreds, and 6 tens; It can also be said to be composed of 308 billion, 4000 million, and 860 one.

How to read large numbers:1. Start from the high digit and read down one level at a time.

2. The number of 10,000 levels should be read according to the reading method of the number of each level, and then add a 10,000 word to the end.

3. No matter how many zeros there are at the end of each level, only one "zero" is read for other digits or several "zeros" in a row.

Reading notes: "2" is read as "two"; If it is a large number, the highest digit is ten, 100,000, billion, ......And when the highest digit is "1", this "1" is not pronounced, for example, 125046 is read as "125,000 and 46".

How to write large numbers:

1. Start with advanced writing and write down level by level.

2. When the digit is on the counting unit.

No, just write 0 on which one.

Precautions for writing numbers: Be sure to pay attention to the "four-digit level" to ensure that each level has four digits, and if it is not enough, it should be made up with 0.

The reading method of the fourth grade number is not read at the end of each level 0, and the rest are read out in order from left to right, and the writing method is counted from the right, and every four digits are drawn at one level, respectively, one level, ten thousand levels, and one hundred million levels.

1. Methods of reading and writing.

1. From high to low, read one level at a time, the 0 at the end of each level is not read, and the rest of the digits are only read as a zero for several consecutive 0s; How to write integers: from high to low, write level by level, which digit does not have a unit, just write 0 on that digit

2. For example, it should be read as: one thousand two hundred and three .4, that is, it is read from the highest thousandth place 1, read it in order from high to low, and when it is written, it should be written from the highest thousandth place 1, and written in order from high to low.

3. Reading is to express the number with words, such as: reading as: 1203.4 to write a number is to use numbers and symbols to represent a certain number. Such as:

Second, the law of writing numbers.

1. From the high position, write in digital order.

2. Write a few on a thousand, a few on a hundred, a few on a ten, and a few on a single digit.

3. If there is no one in the middle or at the end, write 0 on that one.

3. The law of reading.

1. From the high position, read in digital order.

2. Thousands are a few thousands, hundreds are a few hundreds, ten are a few tens, and a single is a few thousands.

3. There is a 0 or several zeros in the middle, and only one zero is read; No matter how many zeros there are at the end, don't read them.

1.The reading of integers: Read from high to low, level by level.

When reading 100 million or 10,000 levels, first read according to the reading method of each level, and then add the word "100 million" or "10,000" after it. The 0 at the end of each level is not read, and the other digits have several zeros in a row that only read a zero.

2.How to write an integer3.How to read decimals

When reading decimals, the integer part is read in the same way as an integer, the decimal point is read as a "point", and the decimal part reads the digits on each digit from left to right.

4.How to write decimals: When writing decimals, the integer part is written according to the way of integers, the decimal point is written in the lower right corner of the single place, and the decimal part is written in order.

5.How to read fractions: When reading fractions, read the denominator first, then read "fractions" and then read the numerator, and the numerator and denominator are integers'Read how to read.

6.How fractions are written: Write the fraction line first, then the denominator, and finally the numerator, according to the way the integer is written.

7.Percentages of readingAct: When reading percentages, read the percent first, then the number before the percent sign, and read the whole number according to the reading method when reading.

8.How to write percentages: Percentages are usually not written as fractions, but are represented by a percent sign "%" after the original numerator.

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What is the relationship between large numbers in Grade 4 mathematics and the reading, writing, and size of numbers within 10,000?

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Question 2. The reading of large numbers is still related to the number of digits, and the number of digits is how many reads, for example, 10,000 is 3 and 30,000.

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