Math Worksheets and Study Guides First Grade. Skip Counting

The resources above correspond to the standards listed below:

Colorado Academic Standards (CAS)

CO.1.1. Number Sense, Properties, and Operations
1.1.1. The whole number system describes place value relationships within and beyond 100 and forms the foundation for efficient algorithms. Students can:
1.1.1.c. Use place value and properties of operations to add and subtract. (CCSS: 1.NBT)
1.1.1.c.iii. Mentally find 10 more or 10 less than any two-digit number, without counting; explain the reasoning used. (CCSS: 1.NBT.5)