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) 168 + 421 =

2) 806 + 956 =

3) 446 + 152 =

4) 287 + 428 =

5) 340 + 774 =

6) 813 + 308 =

7) 308 + 957 =

8) 121 + 167 =

9) 510 + 184 =

10) 275 + 757 =

11) 742 + 889 =

12) 712 + 286 =

13) 300 + 513 =

14) 116 + 202 =

15) 386 + 888 =

16) 470 + 455 =

17) 957 + 783 =

18) 619 + 806 =

19) 447 + 677 =

20) 342 + 959 =

21) 730 + 830 =

22) 256 + 228 =

23) 972 + 402 =

24) 290 + 187 =

25) 155 + 178 =

26) 230 + 505 =

27) 794 + 807 =

28) 559 + 495 =

29) 653 + 255 =

30) 256 + 333 =

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.