Objective: Solve addition and subtraction problems decomposing and composing teen numbers as 1 ten and some ones.
Grade 1 Mathematics Module 2, Topic D, Lesson 27
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Common Core Learning Standards
|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...|
|1.NBT.2.b||The numbers from 11 to 19 are composed of a ten and one, two, three, four, five, six, seven, eight...|