# How Do You Write a Number in Scientific Notation?

To write a number in scientific notation form, write the digits of the original number with a decimal point after the first digit. Then write a multiplication sign, and indicate the power of 10 necessary to put the decimal point where it needs to be to express the original number.

1. Write the digits of the number with the decimal point after the first digit

No matter how big or small the number is, write the numbers that are not zeros as regular digits with a decimal point after the first digit. If there is only one digit, the decimal point is not necessary. After this number, write the multiplication sign and the number 10.

2. Count how far to the right or left the decimal point needs to move

Looking at the original number, count how many spaces the decimal point in your newly written number needs to move to the right or left to create the original number again.

3. Write that number next to the 10

Write the number of spaces the decimal point needs to move as a superscript number to the right of the 10. If the decimal point needs to move to the right, the superscript number is positive. If the decimal point needs to move to the left, write the superscript number as negative.

Similar Articles