Transcript Example 2 Multiple Choice Practice The thickness of the wall of a soap bubble is about 0.000004 meter.

Example 2
Multiple Choice Practice
The thickness of the wall of a soap bubble is about
0.000004 meter. What is the thickness written in
scientific notation?
4  10 –7 m
4  10 –6 m
40  10 –5 m
4  10 7 m
SOLUTION
Standard form
Product form
Scientific notation
0.000004
4  0.000001
4  10 –6
Move decimal point 6 places to the right.
Exponent is – 6.
Example 2
Multiple Choice Practice
The thickness of the wall of the bubble is about 4  10 –6
meter.
ANSWER
The correct answer is B.
Guided Practice
for Example 2
Write the number in scientific notation.
8. 0.00475
ANSWER
4.75  10 –3
9. 0.00000526
ANSWER
5.26  10 –6
10. 0.0000000082
ANSWER
8.2  10 –9
11. 0.0237
ANSWER
2.37  10 –2
Guided Practice
for Example 2
Write the number in scientific notation.
12. 0.000097
ANSWER
9.7  10 –5
13. 0.0003041
ANSWER
3.041  10 –4