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

Introduce students to the "Round + Adjust" addition strategy for decimals with this engaging mental math mystery picture activity. As the lesson progresses, students will solve decimal addition problems and reveal a mystery picture, piece by piece. This reinforcement activity aligns well with number talks and serves as an introduction or review of the rounding and adjusting method. Implement it digitally through Google Classroom or print the activity pages for in-person small groups, pairs, or individual work. With clear directions included, this decimals resource easily integrates into 4th-7th grade math lessons on a variety of topics.