1. How well do you think you did on the most recent quiz? What objectives did you think you did well on? What objectives did you struggle with? Objectives: Convert between regular and scientific notation. *Please have out homework from yesterday

2. Agenda 10/13/10 * Catalyst (5) * Test return and reflection (10) * Review Homework (10) * Scientific notation notes and practice (20) Homework: Scientific notation handout

3. A=47+ B=40-46 C=30-39 D=22-29 F=below 22

4. A short-hand way of writing large and small numbers without writing all of the zeros.

5. Positive Exponent: 2.35 x 10 8 Negative Exponent: 3.97 x 10 -7

6. With a positive exponent, move the decimal to the right: 4.08 x 10 3 = 4 0 8 Don’t forget to fill in your zeroes!

7. With a negative exponent, move the decimal to the left: 4.08 x 10 -3 =. 4 08 Don’t forget to fill in your zeroes!

8. * If an exponent is positive, the number gets larger, so move the decimal to the right. * If an exponent is negative, the number gets smaller, so move the decimal to the left.

9. 1) 9.678 x 10 4 2) 7.4521 x 10- 3 3) 8.513904567 x 10 7 4) 4.09748 x 10 -5 96780.0074521 85139045.67.0000409748

10. 1) First, move the decimal after the first whole number: 3 2 5 8 123 3 2) Second, add your multiplication sign and your base (10). 3. 2 5 8 x 10 3) Count how many spaces the decimal moved and this is the exponent. 3. 2 5 8 x 10

11. 4) See if the original number is greater than or less than one. * If the number is greater than one, the exponent will be positive. 348943 = 3.489 x 10 5 * If the number is less than one, the exponent will be negative..0000000672 = 6.72 x 10 -8

12. 1) 9872432 2).0000345 3).08376 4) 5673 9.872432 x 10 6 3.45 x 10 -5 8.376 x 10 2 5.673 x 10 3