Lesson 20 Subtract 7, 8, and 9 from teen numbers

Topic B : Counting On or Taking from Ten to Solve Result Unknown and Total Unknown Problems

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Main Author: Eureka Math
Format: Text
Language:English
Published: Great Minds 2015
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Online Access:https://dsstorage-hbmsu.com/handle/123456789/1950
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Summary:Topic B : Counting On or Taking from Ten to Solve Result Unknown and Total Unknown Problems