Grade 2 Addition Worksheets - free & printable | K5 Learning Web2nd Grade Math Worksheets: Addition . Grade 2 addition worksheets. These grade 2 addition worksheets span topics from adding single digit numbers to addition in columns with regrouping. All worksheets are printable pdf documents with answer pages. Mental addition (no regrouping) Adding within 0-10: 4 + 5 = Adding within 0-10 - missing addend: …