1. 1 Chapter 1 L1-4 Notes: Powers and Exponents

2. 2 Vocabulary A product of prime factors can be written using exponents and a base.

3. 3 Vocabulary Numbers expressed using exponents are called powers. PowersWordsExpressionValue 22 to the fifth power.2 × 2 × 2 × 2 × 232 33 to the second power or 3 squared. 3 × 39 1010 to the third power or 10 cubed. 10 × 10 × 101,000 5 2 3

4. 4 Examples 1. Write 3 · 3 · 3 · 3 using an exponent. Then find the value of the power. 2. Write 4 as a product. Then find the value of the product. 5

5. 5 Example 3. SCIENCE The approximate daytime surface temperature on the moon can be written as 2 degrees Fahrenheit. What is this temperature? 8

6. 6 Example 4. Write the prime factorization of 72 using exponents.