Subtract 3 within 20: Horizontal Subtraction Worksheet

After learning how to add, students should learn how to subtract numbers. There is lots of practice with subtraction in subtract 3 within 20 worksheet. In this worksheet, students practice solving problems written in the horizontal format. How numbers are laid out in a problem affects the method a student employs to solve it. Therefore to develop actual fluency and mastery of multiple strategies, students must practice different formats.