This addition worksheet is a great introduction for algebra concepts and a great
resource for teachers, parents, and kids. You may select various types of characters to replace
the missing addends. Upper case N or lower case n, x, y or z, may be selected to represent the
missing addend. The formats of the problems are horizontal and the numbers used in the problems
may be selected from the range of 0 to 99. You may select up to 30 addition problems per worksheet.