Add Two 2-Digit Numbers With Regrouping

Build true mastery of two-digit addition with regrouping (carrying)! This interactive practice includes four progressive levels—all aligned with Grade 2 Common Core standard 2.NBT.B.5:

• Level 1: Find the sum (e.g., 47 + 38 = ?)
• Level 2: Make 100 (e.g., 47 + ? = 100)
• Level 3: Find the missing second addend (e.g., 47 + ? = 85)
• Level 4: Mixed challenge (combine all skills)!

All problems involve two two-digit numbers, require regrouping in the ones place, and stay within 100. Perfect for classroom practice, homework, or summer review!