Below are the Common Core State Standards that most closely relate to the following lesson.
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Grades: 6-8, 9-12
6.NS.B. - Compute fluently with multi-digit numbers and find common factors and multiples.
7.RP.A. - Analyze proportional relationships and use them to solve real-world and mathematical problems.
MP1 - Make sense of problems and persevere in solving them.
MP6 - Attend to precision.