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) 407 + 774 =

2) 523 + 119 =

3) 217 + 398 =

4) 957 + 162 =

5) 317 + 256 =

6) 470 + 711 =

7) 269 + 405 =

8) 150 + 566 =

9) 242 + 827 =

10) 389 + 660 =

11) 743 + 430 =

12) 503 + 294 =

13) 300 + 165 =

14) 664 + 141 =

15) 525 + 383 =

16) 861 + 104 =

17) 458 + 640 =

18) 277 + 800 =

19) 305 + 276 =

20) 910 + 336 =

21) 859 + 508 =

22) 930 + 633 =

23) 745 + 828 =

24) 728 + 222 =

25) 385 + 111 =

26) 497 + 894 =

27) 776 + 957 =

28) 278 + 824 =

29) 714 + 458 =

30) 383 + 657 =

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.