1. Warm-up Session 22 Decide whether the number is in scientific notation. If not, write the number correctly. Write in decimal form. Write in scientific notation.

2. Go over HW p. Textbook p. 472 #20 – 30 even #36 – 46 even

3. 8.5 Scientific Notation Multiplying and Dividing

4. Multiplying and Dividing To multiply, divide, or find powers of numbers in scientific notation, use the properties of exponents.

5. Use the properties of exponents. Example 1: Evaluate Multiply these together. Use the rules of exponents. Not scientific. We will move it to the left once, so we ADD one.

6. Use the properties of exponents. Example 2: Evaluate Divide these. Use the rules of exponents.

7. Use the properties of exponents. Example 3: Evaluate Share the exponent.

8. Use the properties of exponents. Example 4: Evaluate (bottom of p. 471 # 17) In 1994 the population of California was about 3.1 x 10 7. In that year about 5.6 x 10 10 local calls were made in California. Estimate the number of local calls made per person in California in 1994.

9. WS 8.5 B 1-18 by 3s 19 - 33 all Turn this in today.

10. Work Review Sheet