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) 378 + 189 =

2) 586 + 942 =

3) 423 + 719 =

4) 639 + 104 =

5) 986 + 156 =

6) 169 + 904 =

7) 736 + 563 =

8) 355 + 117 =

9) 157 + 181 =

10) 966 + 741 =

11) 648 + 378 =

12) 265 + 295 =

13) 599 + 481 =

14) 484 + 899 =

15) 935 + 898 =

16) 269 + 481 =

17) 922 + 800 =

18) 744 + 829 =

19) 808 + 363 =

20) 549 + 948 =

21) 378 + 291 =

22) 502 + 397 =

23) 532 + 172 =

24) 565 + 458 =

25) 152 + 810 =

26) 368 + 851 =

27) 789 + 155 =

28) 399 + 455 =

29) 765 + 347 =

30) 998 + 401 =

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.