OH.NNSO. Number, Number Sense and Operations: Students demonstrate number sense, including an understanding of number systems and operations and how they relate to one another. Students compute fluently and make reasonable estimates using paper and pencil, technology-supported and mental methods.
NNSO.12. Grade Level Indicator: Computation and Estimation: Analyze and solve multi-step problems involving addition, subtraction, multiplication and division using an organized approach, and verify and interpret results with respect to the original problem.
NNSO.3. Grade Level Indicator: Number and Number Systems: Round whole numbers to a given place value.
NNSO.9. Grade Level Indicator: Computation and Estimation: Estimate the results of computations involving whole numbers, fractions and decimals, using a variety of strategies.
NNSO.J. Estimate the results of whole number computations using a variety of strategies, and judge the reasonableness.