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**MAT 105 SPRING 2009 Scientific & Engineering Notation**

Section 1.5 Scientific & Engineering Notation

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MAT 105 SPRING 2009 Scientific Notation A number in scientific notation is expressed in the form where and k is an ____________. Examples: The speed of light is approximately 186,000 mi/s. The diameter of a typical individual fiber in a fiber optic communications cable is approximately m.

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**To change a number in standard (ordinary) notation to scientific notation:**

Move the decimal point so that only ONE non-zero digit is to the left of it. This digit is The number of places the decimal point was moved is k, the power of ten. If the decimal point is moved to the left, then k is a ______________ integer. If the decimal point is moved to the right, then k is a ______________ integer. Write the number in the form

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**Operations Involving Scientific Notation**

First express the numbers in scientific notation, and then divide by hand. Give final answer in scientific notation.

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Engineering Notation A number in engineering notation is expressed in the form where and k is a ____________________________________. E.g. Write each number in engineering notation.

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