Digital Math Mystery Pictures are a fun, engaging, and best of all, SELF-CHECKING assignment in Google Sheets for students! This digital mystery picture includes 10 questions where students must round decimals to the nearest tenth or hundredth. If they round correctly, the answer box will turn green and parts of the mystery picture will appear. If they round incorrectly, the answer box will turn red.

This activity is perfect as a formative assessment or station!