› free-math-worksheets › secondGrade 2 Addition Worksheets - free & printable | K5 Learning Add two 2-digit numbers in columns - no carrying: 36 + 22 Add two 2-digit numbers in columns: 67 + 26 Add three 2-digit numbers in columns: 52 + 47 + 35 Add four 2-digit numbers in columns: 69 + 97 + 30 + 21 Add a 2-digit and a 1-digit number in columns - missing addend: 56 + 64 Add two 2-digit numbers in columns - missing addend: 39 + 50