4-Digit Addition Color by Number turns a key addition skill into a picture students actually want to finish. Students solve each problem, match the answer to the color key, and a hidden picture appears region by region. Students apply the standard algorithm to larger four-digit sums. Built for Grade 4 and aligned to 4.NBT.B.4. No-prep and self-checking, it's ready for math centers, morning work, early finishers, or homework — and every download includes a print-ready PDF plus an interactive version with the answer key.