Which subtraction model (take-away, missing addend, comparison, or measurement) corresponds best to the problem? A coffee can comes packed with enough ground coffee to make 74 cups of coffee. After 36 cups have been made, how many cups of coffee can be made with the remaining ground coffee? A. Take-away B. Measurement c. Missing addend D. Comparison
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This problem best corresponds to the measurement model of subtraction. In this scenario, you are measuring how much coffee is left after taking away a specific quantity (the 36 cups made) from the total amount available (74 cups). The focus is on understanding the change in quantity, which is a characteristic of the measurement model. When tackling problems like this, a common mistake is to confuse it with the take-away model, which only emphasizes removing items without considering the total quantity. Remember that measurement involves understanding how much you have left, while take-away simply highlights what was removed!
