Addition and Subtraction properties 3.NBT.A.2 Grade 3 SBAC Practice Test Questions TOC | Lumos Learning

Addition and Subtraction properties 3.NBT.A.2 Question & Answer Key Resources Lumos StepUp - Smarter Balanced Online Practice and Assessments - Grade 3 Mathematics

Lumos StepUp - Smarter Balanced Online Practice and Assessments - Grade 3 Mathematics Addition and Subtraction properties

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Jenny plans to sell 50 boxes of cookies to help her scout troop raise funds. She sold 20 boxes to her neighbors. Her dad sold 15 boxes at his work office. How many more boxes does she need to sell to meet her goal?