How to read and write integers and decimals and compare the meaning of size?

Read from high to low, level by level. When reading the 110 million level, first read according to the reading method of the 100 million level, and then add a word "100 million" or "10 thousand" at the end. The zeros at the end of each stage are not read, and only a few zeros of other digits are read.

How to write integers:

From high to low, write level by level. If there is no unit on any number, write 0 on that number.

How to pronounce decimals:

When reading decimals, the integer part is read by integer method, the decimal point is read as "dot", and the decimal part reads the numbers on each digit in turn from left to right.

How to write decimals:

When writing decimals, the integer part is written as an integer, the decimal point is written in the lower right corner of the unit, and the decimal part is written on each digit in sequence.

Pay special attention to the comparison of size:

First, we should pay attention to the comparison from the high position, and compare them one by one in numerical order, just like the integer size comparison method, until the size can be separated;

Second, we should pay attention to the difference between the decimal comparison size and the integer comparison size. When the number of integer digits is different, the number with more digits will be larger, while the decimal comparison size has nothing to do with the number of digits, so it should be compared from high to low in numerical order.