To practice these math problems of 2MDA4 worksheets, students are required to measure to determine how much longer one object is than another and express the difference in terms of a standard unit of length. The main objective of these 2.MD.A.4 problems, answers and work with steps is to make students to measure and estimate lengths in standard units. Users can directly refer the answer key to verify the work with steps for the corresponding practice problems given in the 2.MD.A.4 activities under common core state standards for 2nd grade mathematics.