Required Core Fluencies 

Kindergarten: Add and Subtract Within 5 (K.OA.5)

First Grade: Add and Subtract Within 10 (1.OA.6)

Second Grade:

• Single-digit sums and difference from memory (2.OA.2)

• Add and Subtract Within 100 using strategies (2.NBT.5)

Third Grade:

• Single-digit products and quotients from Memory (3.OA.7)

• Add and Subtract within 1,000 using strategies (3.NBT.2)

Fourth Grade: Add and subtract within 1,000,000 (4.NBT.4)

Fifth Grade: Fluently multiply multi-digit whole numbers with the standard algorithm (5.NBT.5)

Sixth Grade: Multi-digit division with the standard algorithm (6.NBT.2) 

(Source: Utah Core & AchievetheCore.org)