Addition Worksheets

Missing Digit Addition Worksheets

Complete PDF interactive worksheets online, with no printing! This addition worksheet can generate up to 30 vertical 2, 3 or 4 digit addition problems with 2 addends. The randomly selected missing digits are marked with blank space to help students in solving the special addition problems. Should your students have already mastered the lower digit addition you can increase the addition difficulty by selecting more digit numbers to add.