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) 451 + 195 =

2) 348 + 851 =

3) 773 + 658 =

4) 794 + 580 =

5) 288 + 686 =

6) 348 + 537 =

7) 290 + 278 =

8) 277 + 987 =

9) 522 + 241 =

10) 779 + 903 =

11) 401 + 775 =

12) 217 + 121 =

13) 145 + 749 =

14) 851 + 534 =

15) 667 + 305 =

16) 883 + 630 =

17) 359 + 792 =

18) 631 + 496 =

19) 872 + 690 =

20) 480 + 171 =

21) 992 + 958 =

22) 314 + 392 =

23) 747 + 158 =

24) 894 + 575 =

25) 652 + 638 =

26) 493 + 564 =

27) 859 + 982 =

28) 292 + 647 =

29) 144 + 127 =

30) 979 + 455 =

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.