Advanced 3-Digit Addition – Free Math Exercises

Ready for big numbers? Our 3-digit addition worksheets strengthen mental math and problem-solving. Great for students aiming for excellence!

1) 345 + 207 =

2) 790 + 385 =

3) 982 + 573 =

4) 102 + 996 =

5) 932 + 632 =

6) 700 + 829 =

7) 590 + 668 =

8) 352 + 240 =

9) 438 + 485 =

10) 793 + 395 =

11) 366 + 274 =

12) 659 + 532 =

13) 488 + 242 =

14) 131 + 322 =

15) 152 + 507 =

16) 100 + 665 =

17) 570 + 102 =

18) 378 + 332 =

19) 706 + 179 =

20) 127 + 338 =

21) 255 + 878 =

22) 256 + 944 =

23) 384 + 789 =

24) 891 + 303 =

25) 634 + 350 =

26) 204 + 221 =

27) 498 + 997 =

28) 512 + 768 =

29) 772 + 403 =

30) 648 + 246 =

To view the results click on the "Show results" button.
To print the exercise sheet click on the "Print" button.
To generate a new exercise sheet click on the "Generate new worksheet" button.

Find also

Master Addition – Free Math Practice Worksheets & Exercises

All Advanced 3-Digit Addition – Free Math Exercises and worksheets are completely free to use and reuse. These resources are designed to enhance math skills and mastery of Advanced 3-Digit Addition – Free Math Exercises concepts. Perfect for students, teachers, and parents, these free worksheets support effective learning and continuous practice in mathematics.