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Measure and estimate lengths in standard units.


2.MD.A.1 Measure the length of an object by selecting and using appropriate tools such as rulers,...
2.MD.A.2 Measure the length of an object twice, using length units of different lengths for the two...
2.MD.A.3 Estimate lengths using units of inches, feet, centimeters, and meters.
2.MD.A.4 Measure to determine how much longer one object is than another, expressing the length difference...

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