Instructional Video

Khan Academy: Missing Number for 3 Digit Addition Within 1000

Curated by ACT

Sal solves for the missing number in problems like ___ + 261 = 630.

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Concepts
addition
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Additional Tags
khan academy, khan academy: missing number for 3-digit addition within 1000
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Classroom Considerations
  • Knovation Readability Score: 1 (1 low difficulty, 5 high difficulty)
  • The intended use for this resource is Instructional