Criteria 
Work meets standard of excellence 
Work meets standard of proficiency 
Work meets acceptable standard 
Work does not yet meet acceptable standard 
Problem Solving: Understanding the problems 
Demonstrates an insightful understanding of the problems 
Demonstrates a complete understanding of the problems 
Demonstrates a basic understanding of the problems 
Demonstrates a limited understanding of the problems 
Reasoning: Division and multiplication 
Makes almost no errors or omissions when calculating products and quotients 
Makes only a few minor errors and/or omissions when calculating products and quotients 
Makes several errors and/or omissions when calculating products and quotients 
Makes major errors and/or omissions when calculating products and quotients

Mental Math and Estimation: Estimating to judge reasonableness 
Uses estimation to verify answers and judges whether or not it is reasonable 
Uses estimation to verify answers 
Shows some ability to use estimation to verify answers 
Has difficulty using estimation to verify answer 