1. Math 2-9: Warm-up

2. Math 2-9: Scientific Notation
Objective: How to express numbers in scientific notation.

3. Vocabulary
scientific notation – a way of expressing numbers as the product of a number between 1 and 10 and a power of ten.
5,500 is 5.5 X 103
standard form – number expressed without exponents.
53,000

4. Powers of 10 (expressing numbers in standard form)
multiplying by a positive power of 10 moves the decimal point to the RIGHT.
multiplying by a negative power of 10 moves the decimal point to the LEFT.

5. Express Numbers in Standard Form

6. Powers of 10 (expressing numbers in scientific notation)
place decimal point after the first nonzero digit.
find the power of 10
if original is between 0 and 1 → power is negative
greater than 1 → power is positive

7. Assignment 2-9 PS (a) 2-9 E (ec)
Celebration of Knowledge: Chapter 2 9/30
**Family Activity DUE 9/30