Mathematical Processes 
Work meets standard of excellence 
Work meets standard of proficiency 
Work meets acceptable standard 
Work does not yet meet acceptable standard 
Mental Mathematics and Estimation 
• demonstrates computational fluency that is efficient and flexible
• chooses an efficient and effective strategy to estimate a solution 
• demonstrates computational fluency that is workable and understood
• chooses a workable and reasonable strategy to estimate a solution 
• demonstrates computational fluency that is routine and familiar
• chooses a familiar strategy to estimate a solution, even though it might not be the most appropriate 
• has difficulty demonstrating computational fluency and must work through procedures
• chooses a random or inappropriate strategy to estimate a solution 
Communication 
• uses effective and specific mathematical language, symbols, and conventions to enhance communication about multiplying and estimating large numbers 
• uses appropriate and correct mathematical language, symbols, and conventions to support communication about multiplying and estimating large numbers 
• uses mathematical language, symbols, and conventions to partially support communication about multiplying and estimating large numbers 
• uses mathematical and nonmathematical language and conventions
incorrectly and/or inconsistently, which interferes with communication about multiplying and estimating large numbers 
Problem Solving 
• develops a thorough plan for solving the problem
• chooses efficient and
effective strategies when applying multiplication and estimation skills to solve the problem; may demonstrate creativity and innovation in his/her approach 
• develops a workable plan for solving the problem
• chooses appropriate and workable strategies when applying multiplication and estimation skills to solve the problem

• develops a basic plan for solving the problem
• chooses simplistic and/or routine strategies when applying multiplication and estimation skills to solve the problem

• develops a minimal and/or flawed plan for solving the problem
• chooses inappropriate and/or unworkable strategies when applying multiplication and estimation skills to solve the problem

Connections 
• makes insightful connections between realworld contexts and estimating 
• makes meaningful connections between realworld contexts and estimating 
• makes simple connections between realworld contexts and estimating 
• makes minimal or weak connections between realworld contexts and estimating 