Adding multiple addends in a fun self-checking Google Sheets mystery picture! Students practice adding 3, 4, and 5 numbers while revealing playful anthropomorphic Earth images. This digital mystery picture activity includes 120 addition problems designed to build fluency with multi-addend addition. Students solve problems and type answers into Google Sheets™. Correct answers reveal parts of a fun Earth-themed pixel art image (Earth at the beach, camping, relaxing, etc.). What’s Included ✔