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) 270 + 963 =

2) 129 + 618 =

3) 221 + 397 =

4) 900 + 150 =

5) 869 + 739 =

6) 715 + 255 =

7) 271 + 219 =

8) 566 + 135 =

9) 682 + 585 =

10) 611 + 598 =

11) 660 + 501 =

12) 680 + 324 =

13) 980 + 833 =

14) 397 + 318 =

15) 274 + 271 =

16) 169 + 366 =

17) 192 + 798 =

18) 678 + 931 =

19) 377 + 781 =

20) 135 + 993 =

21) 126 + 876 =

22) 426 + 408 =

23) 794 + 530 =

24) 958 + 245 =

25) 718 + 971 =

26) 264 + 960 =

27) 513 + 821 =

28) 212 + 636 =

29) 568 + 130 =

30) 400 + 541 =

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.