Use units to guide multi-step problem solving and choose/interpret units, scales, and graph origins.
Choose a simpler scale for modeling large quantities
Problem
Convert \(2,500,000~\text{dollars}\) to millions of dollars, keeping the numerical value in \([1,100)\). State the conversion equality, computation, and scaled quantity.
Big Picture
What this problem is really about
Define exactly how many original units make one scaled unit, then divide the original numerical value by that group size. This counts scaled-unit groups without changing the underlying quantity; multiply back by the scale factor and check the requested interval to confirm that both value and representation make sense.
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