Grade 1 Mathematics Module 2, Topic D, Lesson 28

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Objective: Solve addition problems using ten as a unit, and write two-step solutions.

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Common Core Learning Standards

CCLS State Standard
1.OA.1 Use addition and subtraction within 20 to solve word problems involving situations of adding to,...
1.OA.6 Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use...

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