1. Simplify each expression. Exponents and Division COURSE 3 LESSON 7-3 a. (–5) 0 b. y 0 (–5) 0 = 1Simplify.y 0 = 1Simplify. 7-3

2. Simplify each expression. Exponents and Division COURSE 3 LESSON 7-3 a. 2 –3 b. (p) –8 2 –3 = Write the expression using a positive exponent. 123123 = Simplify. 1818 = 1p81p8 7-3

3. Among the microscopic possible fossils found on Mars, the largest are less than approximately 2.45  10 –5 cm in size. Write this number in standard form. Exponents and Division COURSE 3 LESSON 7-3 The largest of the possible fossils found on Mars are less than approximately 0.0000245 cm in size. Move the decimal point 5 places to the left to make 2.45 less than 1.. 2.45  10 –5 = 0 00002.45 A negative exponent indicates division. 7-3

4. Write 0.0000807 in scientific notation. Exponents and Division COURSE 3 LESSON 7-3 0.0000807 = 0.00008 07. Move the decimal point 5 places to the right to get a factor greater than 1 but less than 10. Since you moved the decimal 5 places, use –5 as the exponent of 10. = 8.07  10 –5 7-3

5. Exponents and Division COURSE 3 LESSON 7-3 1.Write using a single exponent. Simplify each expression. 2.6 0 3.4 –2 4.The diameter of a cell is 9  10 –5 in. Write this number in standard form. 5.Write 0.00084 in scientific notation. 9393 1 97949794 0.00009 in. 8.4  10 –4 7-3 1 16