1. Writing Numbers in Scientific Notation
EXAMPLE 1
Writing Numbers in Scientific Notation
Stars
There are over 300,000,000,000 stars in the Andromeda Galaxy. Write the number of stars in scientific notation.
SOLUTION
Standard form
300,000,000,000
Product form
,000,000,000
Scientific notation
Move decimal point 11 places to the left.
Exponent is 11.
ANSWER
The number in scientific notation is

2. GUIDED PRACTICE
for Example 1
Write the number in scientific notation.
SOLUTION
Standard form
4000
Product form
Scientific notation

3. GUIDED PRACTICE
for Example 1
2. 7,300,000
SOLUTION
Standard form
7,300,000
Product form
,000,000
Scientific notation

4. GUIDED PRACTICE
for Example 1
3. 63,000,000,000
SOLUTION
Standard form
63,000,000,000
Product form
,000,000,000
Scientific notation

5. GUIDED PRACTICE
for Example 1
4. 230,000
SOLUTION
Standard form
230,000
Product form
,000
Scientific notation

6. GUIDED PRACTICE
for Example 1
5. 2,420,000
SOLUTION
Standard form
2,420,000
Product form
,000,000
Scientific notation

7. GUIDED PRACTICE
for Example 1
6. 105
SOLUTION
Standard form
105
Product form
Scientific notation