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) 307 + 457 =

2) 757 + 117 =

3) 277 + 900 =

4) 730 + 818 =

5) 943 + 410 =

6) 442 + 657 =

7) 223 + 730 =

8) 400 + 109 =

9) 943 + 198 =

10) 791 + 456 =

11) 859 + 297 =

12) 187 + 702 =

13) 427 + 741 =

14) 426 + 456 =

15) 690 + 607 =

16) 365 + 474 =

17) 715 + 519 =

18) 241 + 600 =

19) 320 + 726 =

20) 239 + 865 =

21) 538 + 941 =

22) 886 + 435 =

23) 113 + 652 =

24) 150 + 175 =

25) 404 + 802 =

26) 602 + 118 =

27) 890 + 140 =

28) 293 + 667 =

29) 546 + 145 =

30) 398 + 938 =

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.