Instructional Video

Khan Academy: Solving 3 Digit Addition in Your Head

Curated by ACT

Sal shows some techniques for doing mental addition, such as making groups of 10 and 100. Includes a video, transcript, and question and answer section. [7:27]

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Concepts
addition, mental math, place value
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Additional Tags
adding 3 digit numbers, addition within 1000, khan academy, khan academy: solving 3-digit addition in your head
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Classroom Considerations
  • Knovation Readability Score: 4 (1 low difficulty, 5 high difficulty)
  • The intended use for this resource is Instructional