OAS 3.N.2.3 (Oklahoma, 3rd Grade): "Use strategies and algorithms based on knowledge of place value and equality to fluently add and subtract up to five-digit numbers (answer not to exceed 100,000)." 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.
Numbers & Operations (N)3.N.2 Solve real-world and mathematical problems using addition, subtraction, multiplication, and division.3.N.2.3Use strategies and algorithms based on knowledge of place value and equality to fluently add and subtract up to five-digit numbers (answer not to exceed 100,000).