Subtraction with exponential notation

To perform addition or subtraction with numbers expressed in exponential notation, we add or subtract only the initial numbers. The exponent of the result is the same as the exponents of the numbers being added or... 

To perform addition or subtraction with numbers expressed in exponential notation, we add or subtract only... 

Every chemistry student uses a calculator to solve chemistry problems. A suitable calculator can (1) add, subtract, multiply, and divide (2) perform these operations in exponential notation (3) work with logarithms and (4) raise any base to a power. Calculators that can perform these operations usually have other capabilities, too, such as finding squares and square roots, carrying out trigonometric functions, and offering shortcuts for pi and percentage, enclosures, statistical features, and different levels of storage and recall. 

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See also in sourсe #XX -- [ ]

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