Say that every number below is made up of tens of millions, millions, hundreds of thousands, tens of thousands and thousands. ( 1) 538000 _ _ _ _ _ _ (2) 570300.

1 and 538000 consist of 500,000, 3,000 and 8,000.

2.57000 consists of 5.703 million.

3.80280000 consists of 8 tens of millions, 2 hundreds of thousands and 8 tens of thousands.

4.42 million is made up of four millions and two millions.

Extended data

First, the multi-digit reading rules:

1, reading, starting from a high position and reading step by step. When reading 100 million and 10 thousand levels, read according to the reading method of each level, just add a word "100 million" or "10 thousand" at the back.

2. There are 1 zeros in the middle of the number, or there are several zeros in succession, and only one zero is read.

Don't look at the 0 at the end of each level.

Second, the rewriting of numbers.

1, rewrite a number as "ten thousand".

To rewrite a number as "ten thousand", just remove the last four zeros and add the word "ten thousand". If there are less than four zeros at the end, add a decimal point after the ten thousand digits (before the thousand digits), remove the zeros at the end and add the word "ten thousand". ?

2. Rewrite a number into "100 million".

To rewrite a number as "100 million", just remove the eight zeros at the end and add the word "100 million". ? If there are less than eight zeros at the end, add a decimal point after 100 million digits (before 10 million digits), remove the zero at the end, and then add the word "100 million". ?

3. Find out the approximate figures:

Approximate a number by omitting the mantissa after 1 100 million bits. Just remove the number after 1 100 million bits according to the rounding method, and then write the word "1100 million".