OAS 6.N.2.1 Worksheets
OAS 6.N.2.1 (Oklahoma, 6th Grade): "Estimate solutions for integer addition and subtraction of problems in order to assess the reasonableness of results." The worksheets below practice this standard. Each one is a free printable PDF with an answer key, comes in multiple versions, and can also be assigned digitally - no login or account needed.
6.N.2.1