In this lesson, students convert different metric distance measurements and perform arithmetic, with those measurements, in order to solve problems (MP2). The values of the measurements are mostly decimals, so students practice performing arithmetic with decimals. They have opportunities to use all four operations and to select whether to convert from the larger unit to a smaller unit or from the smaller unit to a larger unit. Using a smaller unit requires dealing with larger numbers while using a larger unit requires dealing with decimals. Students are invited to compare the two strategies while using a strategy that makes sense to them.

What evidence did you see that each student applied understanding of decimals from a previous unit?