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) 280 + 720 =

2) 258 + 850 =

3) 428 + 290 =

4) 516 + 744 =

5) 659 + 400 =

6) 669 + 260 =

7) 725 + 552 =

8) 458 + 799 =

9) 803 + 306 =

10) 350 + 752 =

11) 757 + 765 =

12) 388 + 888 =

13) 270 + 764 =

14) 645 + 673 =

15) 546 + 836 =

16) 588 + 973 =

17) 110 + 175 =

18) 905 + 332 =

19) 816 + 522 =

20) 305 + 117 =

21) 460 + 690 =

22) 700 + 299 =

23) 906 + 510 =

24) 192 + 872 =

25) 927 + 581 =

26) 318 + 538 =

27) 455 + 491 =

28) 558 + 646 =

29) 398 + 318 =

30) 985 + 313 =

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.