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) 359 + 526 =

2) 815 + 718 =

3) 896 + 635 =

4) 788 + 483 =

5) 454 + 223 =

6) 238 + 709 =

7) 596 + 114 =

8) 761 + 258 =

9) 265 + 820 =

10) 917 + 357 =

11) 443 + 211 =

12) 304 + 779 =

13) 691 + 853 =

14) 889 + 701 =

15) 123 + 123 =

16) 261 + 184 =

17) 713 + 369 =

18) 675 + 699 =

19) 706 + 173 =

20) 172 + 433 =

21) 944 + 294 =

22) 710 + 748 =

23) 891 + 785 =

24) 525 + 777 =

25) 198 + 550 =

26) 387 + 744 =

27) 685 + 603 =

28) 669 + 489 =

29) 226 + 310 =

30) 871 + 679 =

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.