Complete PDF interactive worksheets online, with no printing! For these special addition worksheets you can generate up to 30 horizontal addition problems with 3 or 4 digit numbers and 2 addends. Both addends can be selected to be positive, negative or mixed numbers.

Number of Digits

Positive or Negative Numbers

Number of Problems for Each Worksheet

Addition: 3 or 4 Digit - Addition Tests with Answers

Interactive PDF worksheet: Printing is not necessary!