Grade 2 Addition Worksheets - free & printable | K5 Learning WebAdding 3-digit numbers in columns: Add two 3-digit numbers in columns - no carrying: 111 + 121 Add two 3-digit numbers in columns: 397 + 984 Add three 3-digit numbers in columns: 456 + 678 + 789 Addition word problems: Simple addition word problems (1-2 digits) Slightly harder addition word problems (1-3 digits) Mixed addition and subtraction ...