**Ohio Education Standards**. is one of the four basic operations of arithmetic, with the others being subtraction, multiplication and division. The addition of two whole numbers is the total amount of those quantities combined. Read More...

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Study GuideAdd/Subtract Fractions

Worksheet/Answer key

Add/Subtract Fractions

Worksheet/Answer keyAdd/Subtract Fractions

Worksheet/Answer keyAdd/Subtract Fractions

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: Use physical models, points of reference, and equivalent forms to add and subtract commonly used fractions with like and unlike denominators and decimals.

NNSO.H. Use and analyze the steps in standard and non-standard algorithms for computing with fractions, decimals and integers.

NNSO.I. Use a variety of strategies, including proportional reasoning, to estimate, compute, solve and explain solutions to problems involving integers, fractions, decimals and percents.