Your class can explore standard and expanded notation, as well as computation with regrouping. They listen to a make-believe story about cavemen and the origin of numerals and place value. Then apply what they learned about renaming and trading to traditional addition and subtraction with regrouping.

Common Core

2.NBT.A.1.a 3.NBT.A.2 4.NBT.A.1 MP4 MP7 MP8