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Put your addition skills to the test with these puzzle boxes for second and third graders!

Packed with addition problems requiring regrouping, this worksheet is a perfect way to practice addition with carrying.

Bolster your third grader's addition skills with at-home practice in three-digit addition.

Give students practice adding three-digit numbers within 1,000! 

Practice three-digit addition with regrouping in this set of 36 problems.

Addition doesn't have to be puzzling—practice finding sums with these second- and third-grade puzzle boxes!