Learners hone their math skills with this two more or two less within 20 worksheet. Students understand that more suggests addition and less suggests subtraction. Therefore, they add or subtract to find two more or two less within 20 in this worksheet. This worksheet is about practicing with the horizontal format in which numbers are written side by side. To develop flexibility with numbers and operations, students need to have enough practice in this format and not just rely on the vertical/column method.