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Add & Subtract Numbers in Scientific Notation

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Videos, worksheets, stories and songs to help Grade 7 students learn about operations on numbers in Scientific Notation.

In this lesson, we will learn how to add and subtract numbers, written in scientific notation, without using a calculator.

The following example shows how to add numbers in scientific notation. Scroll down the page for more examples and solutions.

Add and Subtract Scientific Notation

Scientific Notation: Addition and Subtraction
Explains how to add and subtract numbers written in scientific notation, whether or not they have the same exponent.



Adding and Subtracting Numbers in Scientific Notation
When adding and subtracting numbers in scientific notation, you have to make sure the exponents are the same. Why? This video explains. Scientific Notation Adding and Subtracting
How to add and subtract in Scientific Notation Adding / Subtracting With Scientific Notation
Adding /subtracting numbers written with scientific notation.

Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.


You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.


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