When you need the handwritten newspaper of the first unit of fourth grade mathematics, you can quote the following contents to create it.

The first unit of fourth grade mathematics mainly talks about the understanding of large numbers: the understanding of numbers within 100 million; Large number comparison method; The rewriting method of tens of thousands or billions of integers with tens of thousands or hundreds of millions as the unit; Shorthand of numbers in units of "10,000" or "100 million"

1, the reading method of numbers within 100 million. 100, 1000 and 1 100 million must be read first, then 10000 and finally 100. (that is, reading from a high position) Numbers of 100 million or 10,000 levels are all read by individual levels, followed by 100 million or 10,000. The zero at the end of the stage is not read, and the zero in the middle of the stage must be read. No matter how many zeros there are in the middle, read only one zero.

2. How to write numbers within 100 million. Write in numerical order, starting from the high place. If there is no one in the middle or at the end, write 0 on this bit.

3. The method of comparing quantity and size. Multi-digit comparison size, if the number of digits is different, then the number of digits is large and the number of digits is small. If the digits are the same, start with the first digit from the left, which number is larger and which number is larger. If the first digit from the left is the same, start to compare with the second digit … until the size comparison is finished.

4. The quota is 1 1 ten thousand, 1 ten thousand is1ten thousand, 10 is1ten thousand, 10 is/kloc.

One, ten, one hundred, one thousand and one trillion are all counting units. Units, ten, hundred, thousand, ten thousand, one hundred thousand, one million, ten thousand, one hundred million, one billion, ten billion and one hundred billion are all digits. The number of digits means that a number consists of several numbers.

6. The counting habit in China is that every four digits are one level, which is divided into three levels: level 1, level 10,000 and level 100 million.

7. Multi-digit reading method: when reading, read one level first, then read 100 million levels from high to low, then read 10,000 levels and finally read one level. When you reach the end of the billion and million levels, add billion and million. No matter how many zeros there are at the end of each stage, they will not be read. The zeros in other places should be read out, but when the zeros are added together, only one zero is read out.

8. How to write multi-digits: first divide the read digits into three levels: one billion, ten thousand and one, then write one billion, ten thousand and one level from high to low, and finally fill in unread zeros.

9. In order to facilitate reading and writing, the whole land number of 100 million and 10,000 was rewritten into numbers with "100 million" and "10,000" as units.

10, rounding method: Find the approximate value of a number, mainly depending on whether the number of the most significant digits omitted by it is less than 5, greater than 5 or equal to 5. If the highest digit of the omitted mantissa is 4 or less, all mantissas are discarded. If the highest digit of the omitted mantissa is 5 or more, the mantissa is omitted and one digit is advanced.