This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Solve each problem using pictures and using a number sentence involving division. How many fives are in 15? How many halves are in 3? How many sixths a...

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