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) 229 + 989 =

2) 293 + 187 =

3) 314 + 313 =

4) 314 + 995 =

5) 736 + 788 =

6) 336 + 762 =

7) 408 + 867 =

8) 451 + 225 =

9) 473 + 289 =

10) 434 + 436 =

11) 875 + 323 =

12) 709 + 465 =

13) 538 + 976 =

14) 810 + 254 =

15) 658 + 603 =

16) 163 + 499 =

17) 626 + 356 =

18) 945 + 599 =

19) 830 + 958 =

20) 408 + 831 =

21) 863 + 524 =

22) 475 + 428 =

23) 629 + 298 =

24) 789 + 808 =

25) 809 + 315 =

26) 120 + 497 =

27) 490 + 387 =

28) 163 + 312 =

29) 991 + 248 =

30) 112 + 675 =

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.