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) 423 + 451 =

2) 112 + 279 =

3) 471 + 416 =

4) 708 + 370 =

5) 369 + 239 =

6) 849 + 928 =

7) 851 + 143 =

8) 848 + 447 =

9) 430 + 305 =

10) 488 + 485 =

11) 338 + 561 =

12) 822 + 169 =

13) 687 + 651 =

14) 419 + 927 =

15) 846 + 221 =

16) 983 + 672 =

17) 969 + 229 =

18) 903 + 387 =

19) 191 + 106 =

20) 468 + 477 =

21) 383 + 586 =

22) 476 + 722 =

23) 291 + 462 =

24) 592 + 369 =

25) 445 + 854 =

26) 292 + 915 =

27) 798 + 691 =

28) 511 + 745 =

29) 607 + 186 =

30) 894 + 782 =

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.