Addition/Subtraction
Addition is combining two or more numbers. The term used for addition is plus. When two or more numbers are combined they form a new number called a sum. Subtraction is “taking away” one number from another. The term is minus. The number left after subtracting is called a difference. Read More...
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◂Math Worksheets and Study Guides Fourth Grade. Addition/Subtraction
Study Guide
Addition/Subtraction 
Activity Lesson
Math Crossword Worksheet/Answer key
Addition/Subtraction Worksheet/Answer key
Addition/Subtraction Worksheet/Answer key
Addition/Subtraction Worksheet/Answer key
Addition and Subtraction Worksheet/Answer key
Addition and Subtraction Worksheet/Answer key
Addition and Subtraction Worksheet/Answer key
Circle Around Worksheet/Answer key
Add & Subtract Decimals Worksheet/Answer key
Addition & Subtraction Worksheet/Answer key
Addition & Subtraction Worksheet/Answer key
Addition and Subtraction Crossword
Activity LessonWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyThe resources above cover the following skills:
Number and Operations (NCTM)
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.
Algebra (NCTM)
Use mathematical models to represent and understand quantitative relationships.
Model problem situations with objects and use representations such as graphs, tables, and equations to draw conclusions.