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) 686 + 450 =

2) 779 + 879 =

3) 164 + 213 =

4) 361 + 969 =

5) 835 + 443 =

6) 523 + 266 =

7) 104 + 759 =

8) 150 + 710 =

9) 690 + 153 =

10) 965 + 595 =

11) 588 + 258 =

12) 622 + 758 =

13) 946 + 910 =

14) 819 + 112 =

15) 756 + 536 =

16) 424 + 464 =

17) 592 + 947 =

18) 166 + 274 =

19) 147 + 822 =

20) 509 + 131 =

21) 613 + 589 =

22) 431 + 752 =

23) 321 + 935 =

24) 162 + 400 =

25) 817 + 651 =

26) 615 + 571 =

27) 170 + 164 =

28) 685 + 147 =

29) 550 + 446 =

30) 953 + 953 =

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.