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Warm Up Write each expression using an exponent. 1. 2 • 2 • 2 2. x • x • x • x 3.

Warm Up Write each expression using an exponent. 1. 2 • 2 • 2 2. x • x • x • x 3. Write each expression without using an exponent. 4. 4 3 5. y 2 6. m –4. 2 3. 4 • 4 • 4. y • y. Learning Targets.

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Warm Up Write each expression using an exponent. 1. 2 • 2 • 2 2. x • x • x • x 3.

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  1. Warm Up Write each expression using an exponent. 1.2 • 2 • 2 2.x • x • x • x 3. Write each expression without using an exponent. 4. 43 5. y2 6. m–4 23 4 • 4 • 4 y • y

  2. Learning Targets Students will be able to: Use multiplication properties of exponents to evaluate and simplify expressions.

  3. Products of powers with the same base can be found by writing each power as a repeated multiplication.

  4. Simplify. A. B.

  5. Remember! A number or variable written without an exponent actually has an exponent of 1. 10 = 101 y = y1

  6. Simplify. C. D.

  7. Simplify. a. b.

  8. Simplify. c.

  9. Simplify. d.

  10. distance = rate time mi Light from the Sun travels at about miles per second. It takes about 15,000 seconds for the light to reach Neptune. Find the approximate distance from the Sun to Neptune. Write your answer in scientific notation. Write 15,000 in scientific notation. Use the Commutative and Associative Properties to group. Multiply within each group.

  11. Light travels at about miles per second. Find the approximate distance that light travels in one hour. Write your answer in scientific notation. distance = rate time Write 3,600 in scientific notation. Use the Commutative and Associative Properties to group. Multiply within each group.

  12. Notice the relationship between the exponents in the original power and the exponent in the final power: To find a power of a power, you can use the meaning of exponents.

  13. Simplify.

  14. Simplify. C.

  15. Simplify.

  16. Simplify. c.

  17. Powers of products can be found by using the meaning of an exponent.

  18. Simplify. A. B.

  19. Simplify. C.

  20. Simplify.

  21. Simplify. c.

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