Mental Math Mystery Picture Reveal: "Round + Adjust" Addition Strategy

Engage students in developing efficient mental math strategies with this "Round + Adjust" Addition Mystery Picture activity. Students will practice rounding numbers then adjusting their answer to mentally solve addition problems and reveal a mystery picture. This activity reinforces the valuable "Round + Adjust" strategy for flexible mental math in a motivating way. Introduce the strategy through modeling then have students work independently or collaboratively in small groups to apply it. Challenge students to explain their thinking for each problem. Extend the activity by having students create their own mental math mystery pictures incorporating the "Round + Adjust" method. This versatile resource works for whole group introduction, small group practice, or independent math work either digitally through Google Classroom or printed as worksheets. Recommended for upper elementary students in grades 4 to 7.