What math standards is Happy Numbers aligned to?

Happy Numbers is a Common Core and State Standards-aligned program. 

You can see the alignment maps below:

Alabama Course of Study

Common Core Standards

Connecticut Core Standards
Florida Standards

Florida B.E.S.T Standards

Illinois Learning Standards

Massachusetts Curriculum Framework for Mathematics

Missouri Standards

Nebraska Mathematics Standards
North Carolina Standards
NYS Standards

Ohio Mathematics Standards
Oklahoma Standards

Pennsylvania Core Standards Mathematics

Tennessee Math Standards
Texas Standards
Virginia Standards