Common Core State Standards for Math

2.NBT.B.9

6b9cbaef-d7cc-11e8-824f-0242ac160002 6b9ddc4d-d7cc-11e8-824f-0242ac160002 6b9cd3d1-d7cc-11e8-824f-0242ac160002 2.NBT.B 2.NBT.B.9

Explain why addition and subtraction strategies work, using place value and the properties of operations.

Propose a mapping

Translations

No translations recorded yet.