2. Objectives: Scientific Notation What do I know about…scientific notation What do I think is …the reason why we use scientific notation What do I now know…What do I now think is… I.Unit 1 – What is Science? C.Experimental Data 2.Presenting Scientific Data

3. 602000000000000000000000 6.02 x 10 23 A shortcut used to report numbers that are really small or really large. Makes it easier to enter into calculators and calculate.

4. $25.00 $25,000.00

5. Which numbers are written in scientific notation?.0000572.45 x 10 45 2.45 x 10 -7 1250000000000

6. 6.02 x 10 23

7. x 10 23 Coefficient Coefficient Exponent 6.02 Should always have the decimal after the first non-zero number Should never include trailing zeros or leading zeros The exponent is the number of decimal places the decimal moved.

10. Which numbers are written in scientific notation?.0000572.45 x 10 45 2.45 x 10 -7 1250000000000

11. Let’s try it on the white boards.

12. 6.02 x 10 23 6.02 EE 23

14. (9.45 Multiply Coefficients Add the exponents x 10 34 )(2.58x 10 42 )

16. (9.45 Divide Coefficients Subtract the exponents x 10 34 )/(2.58x 10 42 )

19. Convert the following numbers into scientific notation (round to the 2 nd decimal place) 4569.64 0.0000387