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Chapter 5—Powers, Exponents, and Roots
59 Working with Engineering Notataion
The only significant difference between working with engineering notation and scientific notation is the normalized form use for presenting the values and showing the results.
Recall Engineering notation is properly expressed (normalized) when there is:  Between 1 and 3 digits to the left of the decimal point in the coefficient
 The exponent is 0 or a multiple of 3.

Multiplying and Dividing with Engineering Notation
Procedures To multiply values expressed in engineering notation  Multiply the coefficients
 Add the exponents
 If necessary, normalize the result for engineering notation
To divide expressed in engineering notation  Divide the coefficients
 Subtract the exponents
 If necessary, normalize the result for engineering notation

Examples:
Examples & Exercises
Multiplying and Dividing with Engineering Notation Express your answer with the proper engineering notation.  
Adding and Subtracting with Engineering Notation
In principle, the procedures for adding and subtracting terms expressed in engineering notation are no different from the same operation in any sort of powerof10 notation. The only difference is that the solution should be presented in the normalized engineering format.
Just a Reminder 
Procedure To add or subtract values expressed in scientific notation  Adjust to produce identical exponents, if necessary
 Add or subtract the coefficients, as designated
 Attach the common power of ten
 Normalize for scientific notation, if necessary

Examples:
Examples & Exercises
Adding and Subtracting with Engineering Notation Use these interactive Examples & Exercises to strengthen your understanding and build your skills:  