Curated OER
3 Digit Addition Worksheets with Regrouping
In this math worksheet, students solve 20 problems in which 3 digit numbers are added with regrouping. There are 10 worksheets like this available here.
Curated OER
Three-Digit Plus Three-Digit Addition (B)
In this addition worksheet, students find the sums in 100 vertical three digit plus three digit addition problems. They regroup as needed to find the sums.