
Here's a mixed worksheet for adding and subtracting 3-digit numbers in a column:
Column Addition and Subtraction Mixed Worksheet
Addition:
1. 247 + 156 =
2. 432 + 279 =
3. 198 + 473 =
4. 675 + 219 =
5. 394 + 179 =
Subtraction:
1. 945 – 278 =
2. 564 – 249 =
3. 842 – 317 =
4. 752 – 219 =
5. 639 – 399 =
Answers:
Addition:
1. 403
2. 711
3. 671
4. 894
5. 573
Subtraction:
1. 667
2. 315
3. 525
4. 533
5. 240
Instructions:
1. Read each problem carefully.
2. Line up the numbers in the correct columns (hundreds, tens, ones).
3. Add or subtract the numbers as instructed.
4. Write your answers in the space provided.
5. Check your work by counting up or counting down to ensure your answer is correct.
I hope this worksheet helps your students practice adding and subtracting 3-digit numbers in a column!











