Ohio Mathematics Academic Content Standards (2001)
Number, Number Sense and Operations Standard
Use a variety of methods and appropriate tools (mental math, paper and pencil, calculators) for computing with whole numbers.
Grade Level Indicators (Grade 3)
Add and subtract whole numbers with and without regrouping.
Grade Level Indicators (Grade 4)
Use a variety of methods and appropriate tools for computing with whole numbers; e.g., mental math, paper and pencil, and calculator.
Demonstrate fluency in adding and subtracting whole numbers and in multiplying and dividing whole numbers by 1- and 2-digit numbers and multiples of ten.
Principles and Standards for School Mathematics
Number and Operations Standard
Compute fluently and make reasonable estimates
develop fluency in adding, subtracting, multiplying, and dividing whole numbers;
select appropriate methods and tools for computing with whole numbers from among mental computation, estimation, calculators, and paper and pencil according to the context and nature of the computation and use the selected method or tools.