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This site explains how to mentally add two-digit numbers. Gives exercises and games to practice this skill.
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adding, arithmetic, arithmetic lessons, arithmetic problems, elementary education, javascript education, javascript math, learning arithmetic, learning math, math, math basic operations, math education, math exercises, math lessons, math problems, mathematics, operate, k12, k12 arithmetic, k12 math, k12 mathematics, mental mathematics
Classroom Considerations
- Knovation Readability Score: 1 (1 low difficulty, 5 high difficulty)
- This resource is only available on an unencrypted HTTP website.It should be fine for general use, but don’t use it to share any personally identifiable information