1. Lesson 1.2: Essential Question: How do you use powers to represent repeated multiplication?

2. Key Vocabulary The power of a number shows you how many times to use the number in multiplication The exponent of a number says how many times to use that number in a multiplication. Base: The number that is going to be raised to a power.

3. Example 1 A. 13·13·13·13 = B. (0.2)(0.2)(0.2)= C. n·n·n·n·n·n= D. t·t·t·t·t=

4. Example 2

5. Using Powers in Formulas We use exponents when finding the area and volume of an object. The area of a cube is A=s² The volume of a cube is V= s³

6. Relating to Real Life An artist uses a cube-shaped block of ice to make an ice sculpture for a competition. Find the volume of the block of ice. 20 in.