20+-+Sec.+8.4

Matt Mellinger and Connor Nee

Scientific Notation

[|Scientific Notation] click here to see more about Scientific Notation.

It uses powers of ten to express decimal numbers, numbers in scientific notation are written cx10^n

Example 1)

0.00000001 = 10x10^ -8 Count the number of places in front of the decimal point to use as the power which is negative and multiply 10^-8 and always 1.0 together to get just 0.00000001.

Example 2)

12.84x 10^11=1,284,000,000,000 the number after the 10 is the number that you use to determine what direction and where the decimal goes. since the number is positive it goes to the right and it is 11 so you move the decimal over 11 spots.

Example 3)

0.012 x 10 ^4= 120 since the 4 is the exponent you move the decimal 4 places to the right.

__**Practice Problems**__ Write in decimal form: 1) 2.12 x 10^3

2) 5.643 x 10^7