R2) Were there any problems you were unable to do? If so, write them down or circle them and ask your instructor for help. R1) Were you able to complete the exercises without needing much prompting or help? 10.3 Scientific Notation What are your objectives for Section 10.3? How can you accomplish each objective? 1 Understand Scientific Notation • Write the defi nition of scientifi c notation in your own words and write an example. • Complete the given example on your own. • Complete You Trys 1 and 2. 2 Write a Number in Scientific Notation • Write the procedure for Writing a Number in Scientifi c Notation in your own words. • Complete the given example on your own. • Complete You Try 3. 3 Perform Operations with Numbers in Scientific Notation • Use the rules of exponents and the order of operations to complete the given example on your own. • Complete You Try 4. Read the explanations, follow the examples, take notes, and complete the You Trys. The distance from Earth to the sun is approximately 150,000,000 km. A single rhinovirus (cause of the common cold) measures 0.00002 mm across. Performing operations on very large or very small numbers like these can be diffi cult. This is why scientists and economists, for example, often work with such numbers in a shorthand form called scientifi c notation. Writing numbers in scientifi c notation together with applying rules of exponents can simplify calculations with very large and very small numbers. 1 Understand Scientific Notation In Section 5.4, we learned that multiplying a number by a positive power of 10 moves the decimal point to the right. For example, 3.40 101 3.4 101 34 1 place to the right 97 102 97.00 102 9700 2 places to the right Notice that the result is larger than the original number. 784 CHAPTER 10 The Rules of Exponents and Polynomials www.mhhe.com/messersmith
messersmith_power_prealgebra_1e_ch4_7_10
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