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[Free Registration/Login may be required to access all resource tools.] The resource includes a video tutorial on how to find a missing number in a multi-operational problem by working backwards. The video is followed by practice problems involving all four operations to find missing numbers.
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- Knovation Readability Score: 2 (1 low difficulty, 5 high difficulty)
- The intended use for this resource is Instructional|practice
- 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