1. EXAMPLE 2 Standardized Test Practice SOLUTION Standard form 0.000004 Product form 4 0.000001 Scientific notation 4 10 –6 Move decimal point 6 places to the right.Exponent is – 6. ANSWER The thickness of the bubble is 4 10 meter. –6 The correct answer is B.

2. GUIDED PRACTICE for Example 2 Write the number in scientific notation. SOLUTION Scientific notation 4.75 10 –3 Standard form 0.00475 7. 0.00475 Product form 4.75 0.001

3. GUIDED PRACTICE for Example 2 SOLUTION 8. 0.00000526 Scientific notation 5.26 10 –6 Product form 5.26 0.000001 Standard form 0.00000526

4. GUIDED PRACTICE for Example 2 SOLUTION Scientific notation 8.2 10 –9 Product form 5.2 0.000000001 Standard form 0.0000000082 9. 0.0000000082

5. GUIDED PRACTICE for Example 2 SOLUTION Product form 2.37 0.001 Scientific notation 2.37 10 –2 Standard form 0.0237 10. 0.0237

6. GUIDED PRACTICE for Example 2 SOLUTION Scientific notation 9.7 10 –5 Product form 9.7 0.00001 Standard form 0.000097 11. 0.000097

7. GUIDED PRACTICE for Example 2 SOLUTION Scientific notation 9.141 10 –4 Product form 3.141 0.0001 Standard form 0.0003141 12. 0.0003141