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  1. Addition worksheets for K-5 - K5 Learning

  2. Dynamically Created Addition Worksheets - Math-Aids.Com

  3. Elementary addition -- A complete course in arithmetic

  4. Addition Worksheets & Free Printables - Education.com

  5. Addition Games | Subtraction Games - Math Playground

  6. Addition Worksheets for Kids - Math Worksheets 4 Kids

  7. Free printable addition worksheets for whole numbers & integers

  8. 28 Free Hands-On Addition Activities and Online Games

  9. Marble Math - Learn Addition with Manipulatives - ABCya!

  10. Addition and SubtractionElementary Math