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) 915 + 678 =

2) 786 + 330 =

3) 227 + 579 =

4) 425 + 239 =

5) 391 + 844 =

6) 767 + 626 =

7) 946 + 659 =

8) 479 + 601 =

9) 101 + 397 =

10) 748 + 631 =

11) 665 + 182 =

12) 712 + 678 =

13) 694 + 885 =

14) 419 + 400 =

15) 333 + 374 =

16) 487 + 456 =

17) 815 + 494 =

18) 419 + 827 =

19) 963 + 480 =

20) 420 + 813 =

21) 873 + 377 =

22) 606 + 554 =

23) 140 + 412 =

24) 148 + 978 =

25) 448 + 785 =

26) 104 + 495 =

27) 925 + 357 =

28) 115 + 449 =

29) 360 + 912 =

30) 783 + 585 =

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.