2 Digit Addition & Subtraction w/out Regrouping Color by Number Make 2 digit addition and subtraction practice more engaging with these color by number math worksheets. This mixed practice set provides 2 digit addition and subtraction without regrouping in a fun, self-checking format. Students solve each problem, then use the color code to reveal the hidden picture. The color by number structure encourages accuracy while building confidence with place value and multi-digit computation. These no