Mrs. Post and her daughter, Hallie, teach us a great way to look at multiplication: by adding groups of numbers. Rise and Shine is available to stream on pbs.org and the free PBS App, available on ...

To do the method, begin by writing the two numbers you want to multiply at the top of two columns. In the left column, you ...

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The authors do not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and have disclosed no relevant affiliations beyond their ...