Page 245 - Algebra 1

L E S S O N Using Scientific Notation 37
Warm Up
1. Vocabulary The
tells how many times the base of a power is
3. (_8.34)(-4)(100) (11)
5. 3x-3 (32) 5xy-5
(3)
Simplify. 2. 74
(3)
4.5-5 (32)
used as a factor.
New Concepts Very large or very small numbers are often written in scientific notation, a method of writing a number as the product of a number greater than or
equal to 1 but less than 10 and a power of ten.
Exploration Applying Scientific Notation
a. Copy the table. Multiply to find each number in standard form.
Scientific Notation
Standard Form
1.08 × 102
1.08 × 103
1.08 × 104
1.08 × 105
b. What pattern do you see in the table?
c. Copy the table. Multiply to find each number in standard form.
Scientific Notation
Standard Form
1.08 × 10-1
1.08 × 10-2
1.08 × 10-3
1.08 × 10-4
Online Connection www.SaxonMathResources.com
d. What pattern do you see in the table?
e. Which direction does the decimal move when the exponent is positive?
f. Which direction does the decimal move when the exponent is negative?
230 Saxon Algebra 1