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

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

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

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

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

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

With a negative exponent, move the decimal to the left: 4.08 x = Don’t forget to fill in your zeroes!

* 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.

1) x ) x ) x ) x

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

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 = x 10 5 * If the number is less than one, the exponent will be negative = 6.72 x 10 -8

1) ) ) ) x x x x 10 3