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  1. Addition and Subtraction | Jack Hartmann - YouTube

  2. Addition and Subtraction with Dinosaurs - Math for Kids - Math ...

  3. Addition and Subtraction Worksheets - Math Worksheets 4 Kids

  4. Addition Games | Subtraction Games - Math Playground

  5. Master Subtraction Fast: Fun and Easy Steps for Kids!

  6. Unit 2: Addition and subtraction intro - Khan Academy

  7. Addition and Subtraction Activities for Kids: FUNdamental …

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

  9. Addition and Subtraction Worksheets - Math Salamanders

  10. Addition and Subtraction Games - Topmarks