Grade 1 Mathematics Module 2, Topic B, Lesson 14

student erasing

Objective: Model subtraction of 9 from teen numbers.

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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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