Grade 2 Mathematics Module 5, Topic D, Lesson 20

learning to write

Objective: Choose and explain solution strategies and record with a written addition or subtraction method.

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Common Core Learning Standards

CCLS State Standard
2.NBT.7 Add and subtract within 1000, using concrete models or drawings and strategies based on place value...
2.NBT.8 Mentally add 10 or 100 to a given number 100–900, and mentally subtract 10 or 100 from a given...
2.NBT.9 Explain why addition and subtraction strategies work, using place value and the properties of...

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