Use this calculator to add, subtract, multiply and divide numbers in scientific notation, E notation, or engineering notation. Answers are provided in three formats: scientific notation, E notation, and engineering notation.

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[Free Registration/Login Required] Students will learn how to define significant figures, how to change measurements into scientific notation and how to add, subtract and multiply with significant figures.

This lesson will demonstrate how to add/subtract measurements and report the result to the correct number of significant digits. It is 2 of 3 in the series titled "Adding and Subtracting Using Significant Figures."