### Home > GB8I > Chapter 4 Unit 5 > Lesson INT1: 4.2.1 > Problem 4-61

4-61.

This problem is a checkpoint for laws of exponents and scientific notation. It will be referred to as Checkpoint 4.

Simplify each expression. In parts (e) through (f), write the final answer in scientific notation.

Check your answers by referring to the Checkpoint 4 materials located at the back of your book.

Ideally, at this point you are comfortable working with these types of problems and can solve them correctly. If you feel that you need more confidence when solving these types of problems, then review the Checkpoint 4 materials and try the practice problems provided. From this point on, you will be expected to do problems like these correctly and with confidence.