Compose and decompose numbers up to 1,200 using thousands, hundreds, tens, and ones.
With 2.2A, Grade 2 students practice Compose/decompose numbers in multiple representations and contexts.
This standard clarifies expectations for Compose/decompose numbers so lesson goals, checks for understanding, and feedback stay aligned.
Use short exit tickets and tasks where students explain decisions, show multiple representations, or justify answers—directly aligned to 2.2A.
It lays groundwork for the next grade by deepening accuracy and flexibility with Compose/decompose numbers, so students can tackle more complex problems later.
Students may rely on procedures without reasoning or mix key terms. Build in quick oral explanations, error analysis, and vocabulary supports tied to 2.2A.
Standard 2.2A describes the essential skills and understandings for Compose/decompose numbers in Grade 2. It clarifies the learning outcomes and what successful work looks like.
