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# 3: Number and Operations


The “Dots and Boxes” approach to understanding operations used in this part (and throughout this book) comes from James Tanton, and is used with his permission. See his development of these and other ideas at http://gdaymath.com/.

3: Number and Operations is shared under a CC BY-SA 4.0 license and was authored, remixed, and/or curated by Michelle Manes via source content that was edited to conform to the style and standards of the LibreTexts platform; a detailed edit history is available upon request.

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