Such as: 13600, accurate to ten places, recorded as: 1.360X 10? ; 13200, accurate to hundreds, recorded as: 1.32X 10? ; 322000, accurate to thousands, recorded as: 3.22X 10? .
When the exponent of 10 is greater than 0, the number of digits except the first digit is counted, that is, the number representing 0.
For example, 1kloc-0/8000000000 has 12 in addition to the highest bit, so the scientific notation is written as 1.8× 10 or 1.8E 12. When the exponent of 10 is less than 0, count "the total number of invalid zeros (the total number of all zeros before the first non-zero number)".
Extended data
When using scientific notation to represent numbers, the symbols of numbers are unchanged, but the writing form of numbers is changed, which can conveniently represent some tiny numbers encountered in daily life. For example, the speed of light is about 300 million meters per second; The world population is about 6 10000000.
This kind of number is inconvenient to read and write, so it can avoid writing so many repeated zeros, which is expressed in the form of 6100000000 = 6.1×10? , or: 0.0000 1 =1× 10, that is, the number whose absolute value is less than1can also be expressed as the negative n power of a times10 by scientific notation.
Baidu encyclopedia-scientific symbols
Baidu encyclopedia-scientific symbols