Complete PDF interactive worksheets online, with no printing! With this missing addend addition worksheet you can generate up to 30 horizontal addition problems with giving you the option to select which addend number range to use for the 2 digit addition problems (from 0 to 99). You can choose blank space or "x" for the missing addends. Introduce basic algebra to your students with this easy first step.

Use Addends in the Range...

Missing Addends are Replaced With...

Number of Problems for Each Worksheet

Addition: Missing Addend Addition Tests with Answers

Interactive PDF worksheet: Printing is not necessary!