1. How to write numbers in Scientific Notation Scientific Notation is a standard way of writing very large and small numbers so that they’re easier to use

2. Scientific Notation The formula is N x 10^a Where N is a number between 1 and 10, but not 10, and a is an integer (positive or negative number) * You move the decimal point of a number until the new number is from 1-9 (N) and record the exponent (a) as the number of places the decimal was moved

3. To write in scientific notation for an exponent that is positive Moving the decimal point to the right makes the exponent negative; moving it to the left will give you a positive exponent. Example of positive exponent: write 425,000,000,000 in scientific notation 1.Move the decimal point to the left to create a number from 1-9. So, N =4.25 2.Determine the exponent, which is the number of times you moved the decimal. In this example you moved the decimal 11 times to the left, the exponent is positive. a= 11 Scientific notation of 425,000,000,000-(Nx10^a)=4.25x10^11

4. To write in scientific notation for an exponent that is negative Write.00000025 in scientific notation 1. Move the decimal point to the right to create a new number from 1-9, so N=2.5 2. Determine the exponent, which is the number of times you moved the decimal. – You moved the decimal 7 times to the right; the exponent is negative. So a= -7 and you get 10^-7 – (Nx10^a) Scientific notation for.00000025 is 2.5x10^-7