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) 207 + 737 =

2) 343 + 601 =

3) 573 + 787 =

4) 553 + 347 =

5) 774 + 693 =

6) 707 + 758 =

7) 146 + 532 =

8) 657 + 694 =

9) 383 + 393 =

10) 576 + 370 =

11) 583 + 750 =

12) 753 + 475 =

13) 492 + 783 =

14) 265 + 302 =

15) 473 + 745 =

16) 546 + 221 =

17) 962 + 800 =

18) 587 + 135 =

19) 507 + 166 =

20) 327 + 635 =

21) 249 + 205 =

22) 634 + 596 =

23) 275 + 357 =

24) 885 + 803 =

25) 600 + 829 =

26) 836 + 740 =

27) 515 + 326 =

28) 557 + 885 =

29) 363 + 277 =

30) 228 + 955 =

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.