1. Q2W1: Scientific Notation

2.  I can use numbers expressed in the form of a single digit times an integer power of 10 to estimate very large or very small quantities.

3. Scientific Notation: A QUICK WAY TO WRITE REALLY, REALLY BIG OR REALLY, REALLY SMALL NUMBERS. Example: Standard Form: 191,000,000,000 Scientific Notation: 1.91 x 10 11

4. To be in proper scientific notation the number must be written with * a coefficient between 1 and 10 * and multiplied by a power of ten like this: 4.8 x 10 4 23 X 10 5 is not in proper scientific notation. Why?

5. To figure out a power of 10, think “how many places do I move the decimal point?” 137,000,000 can be rewritten as 1.37 X 10 8

6. 152,000: 68,000,000:

7. 4,000: 306,000,000:

8. 1.23 X 10 5 6.806 X 10 6

9. In the United States, 15,000,000 households use private wells for their water supply. Write this number in scientific notation.

10.  The U.S. has a total of 1.2916 X 10 7 acres of land reserved for state parks. Write this in standard form.

11. 10000 = 10x10x10 x10 =10 4 1000 = 10 x 10 x 10 = 10 3 100 = 10 x 10 = 10 2 10 = 10 1 1 = 10 0 1/10 = 1/10 10 -1 1/100 = 1/10 x 10 10 -2

12. 1) 0.0004 2).00068

13. Using Scientific Notation, rewrite the following numbers. 0.000882 0.00004

14. 1.8 X 10 -4 6.32 X 10 -3

15. The nucleus of a human cell is about 7 X 10 -6 meters in diameter. What is the length in standard notation?