How do you calculate scientific notation????

Rule 1 of Scientific NotationFor the number part, keep one integer and the rest are decimals; Exponential part: For numbers less than 1, the first number is not preceded by a number of 0.

Exponential part: For numbers greater than 10, the exponent is an integer digit -1, for example: 13=, 13 has 2 integers, minus 1, so the exponential part is 1.

Scientific notation is to write a number in a standard format, for example, the first part is a numeric value, 10 12 (10 to the 12th power) means that the number of decimal places is shifted to the right by 12 digits, so that it can be easily expressed by writing a large number of 0s.

A number, a total of n 0s after or in front of the number, leave the first non-0 number as a single digit, multiply by the positive (negative) power of 10 n power.

Multiply the numerical part of two numbers, multiply the power part, and then turn it into a scientific notation form.

1) = 5 * 7 * 10 to the 6th power * 10 to the 9th power.

35*10 to the power of 15.

to the power of 16.

2) = 35*10 to the power of -3.

of -2 power.

After calculating a number, turn this number into a single digit, and then see how many digits it has, the first number does not count, for example:

15654 is scientifically notated.

to the 4th power. I don't know if it's clear, but that's probably it anyway!

Only the decimal places are left, and everything else is expressed as an exponent of 10.

Take it. 10 9 when a number participates in the calculation.

For example. 18000 can be counted as.

Can be written as: 'Refers to the square).

All in all, Brother Song's is the number before the decimal field, and the hidden field is greater than zero and less than ten.

Scientific notation is expressed in terms of power.

When expressing a number in the scientific notation method, it is necessary to pay attention to whether the index is positive or negative. For example, 1,230,000 should be expressed in scientific notation as its exponent is positive exponent 6

In an approximate number, from the first non-0 digit on the left side to the exact number of digits, all the digits in the middle are called the significant digits of the approximate number.

For example, 890314000 keep three significant landings to the 8th power.

839960000 retains three significant figures to the 8th power.

Retain three significant figures to the power of -3.

of -3 power.

A large number is generally expressed by scientific notation, such as 62300000000000; We can use it to represent, but what does it mean? Literally moving the decimal point after 6 to the right by 12 digits.

If it is written, it means that the decimal point after 6 in the number is moved to the right by 12 places, such as 13 10 4 + 4 10 4 = 7 10 4 can be written as 3e4 + 4e4 = 7e4

i.e. AEC+BEC=(A+B)EC(1).

2.4 10 4 7 10 4= 3 10 4 can be written as 4e4 7e4= 3e4

i.e. aec-bec = (a-b)ec(2).

3. 3000000×60000=180’000’000’0003e6*6e4=

i.e. AEM ben=abe(m+n)(3).

6e4÷3e3=-2e1

i.e. aem ben=a be(m-n)(4)5Some derivations about it.

aec)^2=（aec)（aec)=a2e2c（aec)^3=（aec)（aec)（aec)=a3e3c（aec)^n=a^nenc

a×10lgb=ab

aelgb=ab

Scientific notation is used to count relatively large numbers, you move the decimal point forward a few places, just write 10 times square, and that's it.

The notation method is in the form of power, which can sometimes be convenient to represent some larger numbers encountered in daily life, such as: the speed of light is about 300 000 000 meters and seconds; The world's population is about: 6 100 000 000 Such a large number is very inconvenient to read and write, considering that the power of 10 has the following characteristics:

The quadrature of 10 = 100, the quadrature of 10 = 1000, the quadrature of 10 = 10 000 ....... Generally, the power of 10 to the nth power has n 0s after 1, so that the power of 10 can be used to represent some large numbers, such as: 6 100 000 000 = 000 000 000 = to the ninth power.

Any non-0 real number to the power of 0 is equal to 1 When there is a negative integer exponential power, positive numbers less than 1 can also be expressed in scientific notation. For example, a positive number less than 1 can also be expressed in scientific notation as a times 10 to the negative nth power, where a is a positive number with only one digit and n is a positive integer.

Scientific notation.

It is convenient to use to represent a large number: a 10 to the power of n.

Represent a number as (a to the nth power of a 10), where 1 |a|<10,n represents an integer, and this method of notation is called scientific notation.

In the form of power, it is sometimes convenient to represent some large numbers encountered in daily life, such as: the speed of light is about 300 000 000 meters and seconds, which is expressed as 3 * 10 to the power of 8.

Scientific notation writes a number with an absolute value greater than ten 10 to the nth power of a times 10. where a is greater than or equal to one and less than ten, and n is a positive integer. n is 1 less than the integer digit of the original number.

For example, 18,000 can be counted as.

Can be written as: 'Refers to the square).

In a nutshell, the number before the decimal point is greater than zero and less than ten.