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

Children will put their three-digit addition skills to the test as they solve 23 practice problems in this math worksheet.

Learners will solve 20 two- and three-digit addition problems in this versatile practice worksheet.

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

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

Kids solve addition problems with three-digit addends using regrouping on this third grade math worksheet.

Children practice finding the sum of two three-digit whole numbers, with no regrouping, in this math worksheet.

Improve those skills! Practice three-digit addition with these twelve problems.

Practice adding with this third grade addition worksheet. Your child will hone his addition skills.

This simple worksheet is packed with two-digit and three-digit subtraction problems.

Children practice writing numbers from expanded forms, and expanded forms from numbers.