Ohio Standards. You add/subtract/multiply/divide decimals the same way you add/subtract/multiply/divide whole numbers BUT you also need to place the decimal in the correct spot. When multiplying decimals, the decimals may or may NOT be lined up in the multiplication problem.

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Study GuideAdd/Subtract/Multiply/Divide Decimals

WorksheetAdd/Subtract/Multiply/Divide Decimals

WorksheetAdd/Subtract/Multiply/Divide Decimals

WorksheetAdd/Subtract/Multiply/Divide Decimals

WorksheetMultipying & Dividing Decimals

VocabularyAdd/Subtract/Multiply/Divide Decimals

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.11. Grade Level Indicator: Meaning of Operations: Explain how place value is related to addition and subtraction of decimals; e.g., 0.2 + 0.14; the two tenths is added to the one tenth because they are both tenths.

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.