Watch: What is a number line? A number line can be used to add and subtract. Watch the video to learn what a number line is, and how to use it! A number line is a great way to add and subtract.
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Amazon S3 on MSNCoronet Film: Elementary Math - Addition, Subtraction & Number LineExplains the concept of zero in mathematics, emphasizing its role as a number that represents the empty set. It illustrates how zero is used in addition and subtraction, showing that adding or ...
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