Addition Of Three Digit With Regrouping For Kids

Let’s go through 3-digit addition in vertical form with some examples that are easy for kids to understand.

Steps to Add 3-Digit Numbers in Vertical Form

1. Write the numbers in vertical form: Place the numbers one below the other, aligning the digits according to their place value (hundreds, tens, and ones).
2. Start from the right (ones column): Add the digits in the ones column. If the sum is 10 or more, write down the digit in the ones place and carry over the digit in the tens place to the next column.
3. Move to the tens column: Add the digits in the tens column, including any carry-over. If the sum is 10 or more, carry over to the hundreds column.
4. Add the hundreds column: Finally, add the digits in the hundreds column, including any carry-over. Write down the result.
5. Write down the final sum: The final sum is written at the bottom.

Example 1: Adding 875 + 456

   875
+  456
-------

• Step 1: Add the ones column:
• 5 + 6 = 11.
• Write 1 under the ones column and carry over 1 to the tens column.
• Step 2: Add the tens column: 7 + 5 + 1 (carry) = 13.
• Write 3 under the tens column and carry over 1 to the hundreds column.
• Step 3: Add the hundreds column: 8 + 4 + 1 (carry) = 13.
• Write 3 under the hundreds column and carry over 1 to the thousands place.

   875
+  456
-------
   1331

So, 875 + 456 = 1331.

Example 2: Adding 345 + 678

   345
+  678
-------

• Step 1: Add the ones column: 5 + 8 = 13.
• Write 3 under the ones column and carry over 1 to the tens column.
• Step 2: Add the tens column: 4 + 7 + 1 (carry) = 12.
• Write 2 under the tens column and carry over 1 to the hundreds column.
• Step 3: Add the hundreds column: 3 + 6 + 1 (carry) = 10.
• Write 0 under the hundreds column and carry over 1 to the thousands place.

   345
+  678
-------
  1023

So, 345 + 678 = 1023.

Example 3: Adding 789 + 456

   789
+  456
-------

• Step 1: Add the ones column: 9 + 6 = 15.
• Write 5 under the ones column and carry over 1 to the tens column.
• Step 2: Add the tens column: 8 + 5 + 1 (carry) = 14.
• Write 4 under the tens column and carry over 1 to the hundreds column.
• Step 3: Add the hundreds column: 7 + 4 + 1 (carry) = 12.
• Write 2 under the hundreds column and carry over 1 to the thousands place.

   789
+  456
-------
  1245

So, 789 + 456 = 1245.

Example 4: Adding 234 + 567

   234
+  567
-------

• Step 1: Add the ones column: 4 + 7 = 11.
• Write 1 under the ones column and carry over 1 to the tens column.
• Step 2: Add the tens column: 3 + 6 + 1 (carry) = 10.
• Write 0 under the tens column and carry over 1 to the hundreds column.
• Step 3: Add the hundreds column: 2 + 5 + 1 (carry) = 8.
• Write 8 under the hundreds column.

   234
+  567
-------
   801

So, 234 + 567 = 801.

Example 5: Adding 482 + 319

   482
+  319
-------

• Step 1: Add the ones column: 2 + 9 = 11.
• Write 1 under the ones column and carry over 1 to the tens column.
• Step 2: Add the tens column: 8 + 1 + 1 (carry) = 10.
• Write 0 under the tens column and carry over 1 to the hundreds column.
• Step 3: Add the hundreds column: 4 + 3 + 1 (carry) = 8.
• Write 8 under the hundreds column.

   482
+  319
-------
   801

So, 482 + 319 = 801.

Example 6: Adding 176 + 827

   176
+  827
-------

• Step 1: Add the ones column: 6 + 7 = 13.
• Write 3 under the ones column and carry over 1 to the tens column.
• Step 2: Add the tens column: 7 + 2 + 1 (carry) = 10.
• Write 0 under the tens column and carry over 1 to the hundreds column.
• Step 3: Add the hundreds column: 1 + 8 + 1 (carry) = 10.
• Write 0 under the hundreds column and carry over 1 to the thousands place.

   176
+  827
-------
  1003

So, 176 + 827 = 1003.

Example 7: Adding 652 + 248

   652
+  248
-------

• Step 1: Add the ones column: 2 + 8 = 10.
• Write 0 under the ones column and carry over 1 to the tens column.
• Step 2: Add the tens column: 5 + 4 + 1 (carry) = 10.
• Write 0 under the tens column and carry over 1 to the hundreds column.
• Step 3: Add the hundreds column: 6 + 2 + 1 (carry) = 9.
• Write 9 under the hundreds column.

   652
+  248
-------
   900

So, 652 + 248 = 900.

Example 8: Adding 739 + 184

   739
+  184
-------

• Step 1: Add the ones column: 9 + 4 = 13.
• Write 3 under the ones column and carry over 1 to the tens column.
• Step 2: Add the tens column: 3 + 8 + 1 (carry) = 12.
• Write 2 under the tens column and carry over 1 to the hundreds column.
• Step 3: Add the hundreds column: 7 + 1 + 1 (carry) = 9.
• Write 9 under the hundreds column.

   739
+  184
-------
   923

So, 739 + 184 = 923.

Example 9: Adding 893 + 507

   893
+  507
-------

• Step 1: Add the ones column: 3 + 7 = 10.
• Write 0 under the ones column and carry over 1 to the tens column.
• Step 2: Add the tens column: 9 + 0 + 1 (carry) = 10.
• Write 0 under the tens column and carry over 1 to the hundreds column.
• Step 3: Add the hundreds column: 8 + 5 + 1 (carry) = 14.
• Write 4 under the hundreds column and carry over 1 to the thousands place.

   893
+  507
-------
  1400

So, 893 + 507 = 1400.

Example 10: Adding 451 + 789

   451
+  789
-------

• Step 1: Add the ones column: 1 + 9 = 10.
• Write 0 under the ones column and carry over 1 to the tens column.
• Step 2: Add the tens column: 5 + 8 + 1 (carry) = 14.
• Write 4 under the tens column and carry over 1 to the hundreds column.
• Step 3: Add the hundreds column: 4 + 7 + 1 (carry) = 12.
• Write 2 under the hundreds column and carry over 1 to the thousands place.

   451
+  789
-------
  1240

So, 451 + 789 = 1240.

Example 11: Adding 395 + 706

   395
+  706
-------

• Step 1: Add the ones column: 5 + 6 = 11.
• Write 1 under the ones column and carry over 1 to the tens column.
• Step 2: Add the tens column: 9 + 0 + 1 (carry) = 10.
• Write 0 under the tens column and carry over 1 to the hundreds column.
• Step 3: Add the hundreds column: 3 + 7 + 1 (carry) = 11.
• Write 1 under the hundreds column and carry over 1 to the thousands place.

   395
+  706
-------
  1101

So, 395 + 706 = 1101.

Example 12: Adding 487 + 358

   487
+  358
-------

• Step 1: Add the ones column: 7 + 8 = 15.
• Write 5 under the ones column and carry over 1 to the tens column.
• Step 2: Add the tens column: 8 + 5 + 1 (carry) = 14.
• Write 4 under the tens column and carry over 1 to the hundreds column.
• Step 3: Add the hundreds column: 4 + 3 + 1 (carry) = 8.
• Write 8 under the hundreds column.

   487
+  358
-------
   845

So, 487 + 358 = 845.

Example 13: Adding 673 + 428

   673
+  428
-------

• Step 1: Add the ones column: 3 + 8 = 11.
• Write 1 under the ones column and carry over 1 to the tens column.
• Step 2: Add the tens column: 7 + 2 + 1 (carry) = 10.
• Write 0 under the tens column and carry over 1 to the hundreds column.
• Step 3: Add the hundreds column: 6 + 4 + 1 (carry) = 11.
• Write 1 under the hundreds column and carry over 1 to the thousands place.

   673
+  428
-------
  1101

So, 673 + 428 = 1101.

Example 14: Adding 814 + 297

   814
+  297
-------

• Step 1: Add the ones column: 4 + 7 = 11.
• Write 1 under the ones column and carry over 1 to the tens column.
• Step 2: Add the tens column: 1 + 9 + 1 (carry) = 11.
• Write 1 under the tens column and carry over 1 to the hundreds column.
• Step 3: Add the hundreds column: 8 + 2 + 1 (carry) = 11.
• Write 1 under the hundreds column and carry over 1 to the thousands place.

   814
+  297
-------
  1111

So, 814 + 297 = 1111.

Example 15: Adding 951 + 629

   951
+  629
-------

• Step 1: Add the ones column: 1 + 9 = 10.
• Write 0 under the ones column and carry over 1 to the tens column.
• Step 2: Add the tens column: 5 + 2 + 1 (carry) = 8.
• Write 8 under the tens column.
• Step 3: Add the hundreds column: 9 + 6 = 15.
• Write 5 under the hundreds column and carry over 1 to the thousands place.

   951
+  629
-------
  1580

So, 951 + 629 = 1580.

Example 16: Adding 236 + 579

   236
+  579
-------

• Step 1: Add the ones column: 6 + 9 = 15.
• Write 5 under the ones column and carry over 1 to the tens column.
• Step 2: Add the tens column: 3 + 7 + 1 (carry) = 11.
• Write 1 under the tens column and carry over 1 to the hundreds column.
• Step 3: Add the hundreds column: 2 + 5 + 1 (carry) = 8.
• Write 8 under the hundreds column.

   236
+  579
-------
   815

So, 236 + 579 = 815.

Example 17: Adding 784 + 237

   784
+  237
-------

• Step 1: Add the ones column: 4 + 7 = 11.
• Write 1 under the ones column and carry over 1 to the tens column.
• Step 2: Add the tens column: 8 + 3 + 1 (carry) = 12.
• Write 2 under the tens column and carry over 1 to the hundreds column.
• Step 3: Add the hundreds column: 7 + 2 + 1 (carry) = 10.
• Write 0 under the hundreds column and carry over 1 to the thousands place.

   784
+  237
-------
  1021

So, 784 + 237 = 1021.

Example 18: Adding 645 + 456

   645
+  456
-------

• Step 1: Add the ones column: 5 + 6 = 11.
• Write 1 under the ones column and carry over 1 to the tens column.
• Step 2: Add the tens column: 4 + 5 + 1 (carry) = 10.
• Write 0 under the tens column and carry over 1 to the hundreds column.
• Step 3: Add the hundreds column: 6 + 4 + 1 (carry) = 11.
• Write 1 under the hundreds column and carry over 1 to the thousands place.

   645
+  456
-------
  1101

So, 645 + 456 = 1101.

Example 19: Adding 829 + 671

   829
+  671
-------

• Step 1: Add the ones column: 9 + 1 = 10.
• Write 0 under the ones column and carry over 1 to the tens column.
• Step 2: Add the tens column: 2 + 7 + 1 (carry) = 10.
• Write 0 under the tens column and carry over 1 to the hundreds column.
• Step 3: Add the hundreds column: 8 + 6 + 1 (carry) = 15.
• Write 5 under the hundreds column and carry over 1 to the thousands place.

   829
+  671
-------
  1500

So, 829 + 671 = 1500.

Example 20: Adding 783 + 318

   783
+  318
-------

• Step 1: Add the ones column: 3 + 8 = 11.
• Write 1 under the ones column and carry over 1 to the tens column.
• Step 2: Add the tens column: 8 + 1 + 1 (carry) = 10.
• Write 0 under the tens column and carry over 1 to the hundreds column.
• Step 3: Add the hundreds column: 7 + 3 + 1 (carry) = 11.
• Write 1 under the hundreds column and carry over 1 to the thousands place.

   783
+  318
-------
  1101

So, 783 + 318 = 1101.

Example 21: Adding 365 + 482

   365
+  482
-------

• Step 1: Add the ones column: 5 + 2 = 7.
• Write 7 under the ones column.
• Step 2: Add the tens column: 6 + 8 = 14.
• Write 4 under the tens column and carry over 1 to the hundreds column.
• Step 3: Add the hundreds column: 3 + 4 + 1 (carry) = 8.
• Write 8 under the hundreds column.

   365
+  482
-------
   847

So, 365 + 482 = 847.

Example 22: Adding 749 + 284

   749
+  284
-------

• Step 1: Add the ones column: 9 + 4 = 13.
• Write 3 under the ones column and carry over 1 to the tens column.
• Step 2: Add the tens column: 4 + 8 + 1 (carry) = 13.
• Write 3 under the tens column and carry over 1 to the hundreds column.
• Step 3: Add the hundreds column: 7 + 2 + 1 (carry) = 10.
• Write 0 under the hundreds column and carry over 1 to the thousands place.

   749
+  284
-------
  1033

So, 749 + 284 = 1033.

Example 23: Adding 528 + 674

   528
+  674
-------

• Step 1: Add the ones column: 8 + 4 = 12.
• Write 2 under the ones column and carry over 1 to the tens column.
• Step 2: Add the tens column: 2 + 7 + 1 (carry) = 10.
• Write 0 under the tens column and carry over 1 to the hundreds column.
• Step 3: Add the hundreds column: 5 + 6 + 1 (carry) = 12.
• Write 2 under the hundreds column and carry over 1 to the thousands place.

   528
+  674
-------
  1202

So, 528 + 674 = 1202.

Example 24: Adding 453 + 348

   453
+  348
-------

• Step 1: Add the ones column: 3 + 8 = 11.
• Write 1 under the ones column and carry over 1 to the tens column.
• Step 2: Add the tens column: 5 + 4 + 1 (carry) = 10.
• Write 0 under the tens column and carry over 1 to the hundreds column.
• Step 3: Add the hundreds column: 4 + 3 + 1 (carry) = 8.
• Write 8 under the hundreds column.

   453
+  348
-------
   801

So, 453 + 348 = 801.

Example 25: Adding 729 + 592

   729
+  592
-------

• Step 1: Add the ones column: 9 + 2 = 11.
• Write 1 under the ones column and carry over 1 to the tens column.
• Step 2: Add the tens column: 2 + 9 + 1 (carry) = 12.
• Write 2 under the tens column and carry over 1 to the hundreds column.
• Step 3: Add the hundreds column: 7 + 5 + 1 (carry) = 13.
• Write 3 under the hundreds column and carry over 1 to the thousands place.

   729
+  592
-------
  1321

So, 729 + 592 = 1321.

Example 26: Adding 684 + 517

   684
+  517
-------

• Step 1: Add the ones column: 4 + 7 = 11.
• Write 1 under the ones column and carry over 1 to the tens column.
• Step 2: Add the tens column: 8 + 1 + 1 (carry) = 10.
• Write 0 under the tens column and carry over 1 to the hundreds column.
• Step 3: Add the hundreds column: 6 + 5 + 1 (carry) = 12.
• Write 2 under the hundreds column and carry over 1 to the thousands place.

   684
+  517
-------
  1201

So, 684 + 517 = 1201.

Example 27: Adding 342 + 659

   342
+  659
-------

• Step 1: Add the ones column: 2 + 9 = 11.
• Write 1 under the ones column and carry over 1 to the tens column.
• Step 2: Add the tens column: 4 + 5 + 1 (carry) = 10.
• Write 0 under the tens column and carry over 1 to the hundreds column.
• Step 3: Add the hundreds column: 3 + 6 + 1 (carry) = 10.
• Write 0 under the hundreds column and carry over 1 to the thousands place.

   342
+  659
-------
  1001

So, 342 + 659 = 1001.

Example 28: Adding 715 + 273

   715
+  273
-------

• Step 1: Add the ones column: 5 + 3 = 8.
• Write 8 under the ones column.
• Step 2: Add the tens column: 1 + 7 = 8.
• Write 8 under the tens column.
• Step 3: Add the hundreds column: 7 + 2 = 9.
• Write 9 under the hundreds column.

   715
+  273
-------
   988

So, 715 + 273 = 988.

Example 29: Adding 438 + 521

   438
+  521
-------

• Step 1: Add the ones column: 8 + 1 = 9.
• Write 9 under the ones column.
• Step 2: Add the tens column: 3 + 2 = 5.
• Write 5 under the tens column.
• Step 3: Add the hundreds column: 4 + 5 = 9.
• Write 9 under the hundreds column.

   438
+  521
-------
   959

So, 438 + 521 = 959.

Example 30: Adding 864 + 137

   864
+  137
-------

• Step 1: Add the ones column: 4 + 7 = 11.
• Write 1 under the ones column and carry over 1 to the tens column.
• Step 2: Add the tens column: 6 + 3 + 1 (carry) = 10.
• Write 0 under the tens column and carry over 1 to the hundreds column.
• Step 3: Add the hundreds column: 8 + 1 + 1 (carry) = 10.
• Write 0 under the hundreds column and carry over 1 to the thousands place.

   864
+  137
-------
  1001

So, 864 + 137 = 1001.

Example 31:

Problem:
Add 243 and 158.

Step 1: Write the numbers vertically, aligning the digits by place value (hundreds, tens, ones).

  243
+ 158
------

Step 2: Start adding from the rightmost column (ones place).

• 3 + 8 = 11.
• Write down 1 in the ones place and carry over 1 to the tens place.

Step 3: Move to the tens column.

• 4 + 5 = 9.
• Now add the carried-over 1: 9 + 1 = 10.
• Write down 0 in the tens place and carry over 1 to the hundreds place.

Step 4: Move to the hundreds column.

• 2 + 1 = 3.
• Now add the carried-over 1: 3 + 1 = 4.

Final Answer:

  243
+ 158
------
  401

Example 32:

Problem:
Add 587 and 276.

Step 1: Write the numbers vertically.

  587
+ 276
------

Step 2: Start with the ones column.

• 7 + 6 = 13.
• Write down 3 and carry over 1 to the tens place.

Step 3: Move to the tens column.

• 8 + 7 = 15.
• Add the carried-over 1: 15 + 1 = 16.
• Write down 6 and carry over 1 to the hundreds place.

Step 4: Move to the hundreds column.

• 5 + 2 = 7.
• Add the carried-over 1: 7 + 1 = 8.

Final Answer:

  587
+ 276
------
  863

Example 33:

Problem:
Add 435 and 290.

Step 1: Write the numbers vertically.

  435
+ 290
------

Step 2: Start with the ones column.

• 5 + 0 = 5.
• Write down 5.

Step 3: Move to the tens column.

• 3 + 9 = 12.
• Write down 2 and carry over 1 to the hundreds place.

Step 4: Move to the hundreds column.

• 4 + 2 = 6.
• Add the carried-over 1: 6 + 1 = 7.

Final Answer:

  435
+ 290
------
  725

Example 34:

Problem:
Add 748 and 132.

Step 1: Write the numbers vertically.

  748
+ 132
------

Step 2: Start with the ones column.

• 8 + 2 = 10.
• Write down 0 and carry over 1 to the tens place.

Step 3: Move to the tens column.

• 4 + 3 = 7.
• Add the carried-over 1: 7 + 1 = 8.

Step 4: Move to the hundreds column.

• 7+1=87 + 1 = 87+1=8.

Final Answer:

  748
+ 132
------
  880

Example 35:

Problem:
Add 614 and 286.

Step 1: Write the numbers vertically.

  614
+ 286
------

Step 2: Start with the ones column.

• 4 + 6 = 10.
• Write down 0 and carry over 1 to the tens place.

Step 3: Move to the tens column.

• 1 + 8 = 9.
• Add the carried-over 1: 9 + 1 = 10.
• Write down 0 and carry over 1 to the hundreds place.

Step 4: Move to the hundreds column.

• 6 + 2 = 8.
• Add the carried-over 1: 8 + 1 = 9.

Final Answer:

  614
+ 286
------
  900

Example 36:

Problem:
Add 471 and 328.

Step 1: Write the numbers vertically, aligning by place value.

  471
+ 328
------

Step 2: Start adding from the rightmost column (ones place).

• 1 + 8 = 9.
• Write down 9 in the ones place.

Step 3: Move to the tens column.

• 7 + 2 = 9.
• Write down 9 in the tens place.

Step 4: Move to the hundreds column.

• 4 + 3 = 7.
• Write down 7 in the hundreds place.

Final Answer:

  471
+ 328
------
  799

Example 37:

Problem:
Add 654 and 293.

Step 1: Write the numbers vertically.

  654
+ 293
------

Step 2: Start with the ones column.

• 4 + 3 = 7.
• Write down 7.

Step 3: Move to the tens column.

• 5 + 9 = 14.
• Write down 4 and carry over 1 to the hundreds place.

Step 4: Move to the hundreds column.

• 6 + 2 = 8.
• Add the carried-over 1: 8 + 1 = 9.

Final Answer:

  654
+ 293
------
  947

Example 38:

Problem:
Add 842 and 157.

Step 1: Write the numbers vertically.

  842
+ 157
------

Step 2: Start with the ones column.

• 2 + 7 = 9.
• Write down 9.

Step 3: Move to the tens column.

• 4 + 5 = 9.
• Write down 9.

Step 4: Move to the hundreds column.

• 8 + 1 = 9.
• Write down 9.

Final Answer:

  842
+ 157
------
  999

Example 39:

Problem:
Add 734 and 289.

Step 1: Write the numbers vertically.

  734
+ 289
------

Step 2: Start with the ones column.

• 4 + 9 = 13.
• Write down 3 and carry over 1 to the tens place.

Step 3: Move to the tens column.

• 3 + 8 = 11.
• Add the carried-over 1: 11 + 1 = 12.
• Write down 2 and carry over 1 to the hundreds place.

Step 4: Move to the hundreds column.

• 7 + 2 = 9.
• Add the carried-over 1: 9 + 1 = 10.
• Write down 10.

Final Answer:

  734
+ 289
------
 1023

Example 40:

Problem:
Add 526 and 474.

Step 1: Write the numbers vertically.

  526
+ 474
------

Step 2: Start with the ones column.

• 6 + 4 = 10.
• Write down 0 and carry over 1 to the tens place.

Step 3: Move to the tens column.

• 2 + 7 = 9.
• Add the carried-over 1: 9 + 1 = 10.
• Write down 0 and carry over 1 to the hundreds place.

Step 4: Move to the hundreds column.

• 5 + 4 = 9.
• Add the carried-over 1: 9 + 1 = 10.
• Write down 10.

Final Answer:

  526
+ 474
------
 1000

Example 41:

Problem:
Add 728 and 251.

Step 1: Write the numbers vertically.

  728
+ 251
------

Step 2: Start with the ones column.

• 8 + 1 = 9.
• Write down 9.

Step 3: Move to the tens column.

• 2 + 5 = 7.
• Write down 7.

Step 4: Move to the hundreds column.

• 7 + 2 = 9.
• Write down 9.

Final Answer:

  728
+ 251
------
  979

Example 42:

Problem:
Add 369 and 482.

Step 1: Write the numbers vertically.

  369
+ 482
------

Step 2: Start with the ones column.

• 9 + 2 = 11.
• Write down 1 and carry over 1 to the tens place.

Step 3: Move to the tens column.

• 6 + 8 = 14.
• Add the carried-over 1: 14 + 1 = 15.
• Write down 5 and carry over 1 to the hundreds place.

Step 4: Move to the hundreds column.

• 3 + 4 = 7.
• Add the carried-over 1: 7 + 1 = 8.

Final Answer:

  369
+ 482
------
  851

Example 43:

Problem:
Add 657 and 134.

Step 1: Write the numbers vertically.

  657
+ 134
------

Step 2: Start with the ones column.

• 7 + 4 = 11.
• Write down 1 and carry over 1 to the tens place.

Step 3: Move to the tens column.

• 5 + 3 = 8.
• Add the carried-over 1: 8 + 1 = 9.
• Write down 9.

Step 4: Move to the hundreds column.

• 6 + 1 = 7.
• Write down 7.

Final Answer:

  657
+ 134
------
  791

Example 44:

Problem:
Add 482 and 347.

Step 1: Write the numbers vertically.

  482
+ 347
------

Step 2: Start with the ones column.

• 2 + 7 = 9.
• Write down 9.

Step 3: Move to the tens column.

• 8 + 4 = 12.
• Write down 2 and carry over 1 to the hundreds place.

Step 4: Move to the hundreds column.

• 4 + 3 = 7.
• Add the carried-over 1: 7 + 1 = 8.

Final Answer:

  482
+ 347
------
  829

Example 45:

Problem:
Add 791 and 208.

Step 1: Write the numbers vertically.

  791
+ 208
------

Step 2: Start with the ones column.

• 1 + 8 = 9.
• Write down 9.

Step 3: Move to the tens column.

• 9 + 0 = 9.
• Write down 9.

Step 4: Move to the hundreds column.

• 7 + 2 = 9.
• Write down 9.

Final Answer:

  791
+ 208
------
  999

Example 46:

Problem:
Add 324 and 175.

Step 1: Write the numbers vertically.

  324
+ 175
------

Step 2: Start with the ones column.

• 4 + 5 = 9.
• Write down 9.

Step 3: Move to the tens column.

• 2 + 7 = 9.
• Write down 9.

Step 4: Move to the hundreds column.

• 3 + 1 = 4.
• Write down 4.

Final Answer:

  324
+ 175
------
  499

Example 47:

Problem:
Add 689 and 312.

Step 1: Write the numbers vertically.

  689
+ 312
------

Step 2: Start with the ones column.

• 9 + 2 = 11.
• Write down 1 and carry over 1 to the tens place.

Step 3: Move to the tens column.

• 8 + 1 = 9.
• Add the carried-over 1: 9 + 1 = 10.
• Write down 0 and carry over 1 to the hundreds place.

Step 4: Move to the hundreds column.

• 6 + 3 = 9.
• Add the carried-over 1: 9 + 1 = 10.

Final Answer:

  689
+ 312
------
 1001

Example 48:

Problem:
Add 573 and 426.

Step 1: Write the numbers vertically.

  573
+ 426
------

Step 2: Start with the ones column.

• 3 + 6 = 9.
• Write down 9.

Step 3: Move to the tens column.

• 7 + 2 = 9.
• Write down 9.

Step 4: Move to the hundreds column.

• 5 + 4 = 9.
• Write down 9.

Final Answer:

  573
+ 426
------
  999

Example 49:

Problem:
Add 385 and 247.

Step 1: Write the numbers vertically.

  385
+ 247
------

Step 2: Start with the ones column.

• 5 + 7 = 12.
• Write down 2 and carry over 1 to the tens place.

Step 3: Move to the tens column.

• 8 + 4 = 12.
• Add the carried-over 1: 12 + 1 = 13.
• Write down 3 and carry over 1 to the hundreds place.

Step 4: Move to the hundreds column.

• 3 + 2 = 5.
• Add the carried-over 1: 5 + 1 = 6.

Final Answer:

  385
+ 247
------
  632

Example 50:

Problem:
Add 962 and 438.

Step 1: Write the numbers vertically.

  962
+ 438
------

Step 2: Start with the ones column.

• 2 + 8 = 10.
• Write down 0 and carry over 1 to the tens place.

Step 3: Move to the tens column.

• 6 + 3 = 9.
• Add the carried-over 1: 9 + 1 = 10.
• Write down 0 and carry over 1 to the hundreds place.

Step 4: Move to the hundreds column.

• 9 + 4 = 13.
• Add the carried-over 1: 13 + 1 = 14.

Final Answer:

  962
+ 438
------
 1400

Example 51:

Problem:
Add 741 and 259.

Step 1: Write the numbers vertically.

  741
+ 259
------

Step 2: Start with the ones column.

• 1 + 9 = 10.
• Write down 0 and carry over 1 to the tens place.

Step 3: Move to the tens column.

• 4 + 5 = 9.
• Add the carried-over 1: 9 + 1 = 10.
• Write down 0 and carry over 1 to the hundreds place.

Step 4: Move to the hundreds column.

• 7 + 2 = 9.
• Add the carried-over 1: 9 + 1 = 10.

Final Answer:

  741
+ 259
------
 1000

Example 52:

Problem:
Add 598 and 302.

Step 1: Write the numbers vertically.

  598
+ 302
------

Step 2: Start with the ones column.

• 8 + 2 = 10.
• Write down 0 and carry over 1 to the tens place.

Step 3: Move to the tens column.

• 9 + 0 = 9.
• Add the carried-over 1: 9 + 1 = 10.
• Write down 0 and carry over 1 to the hundreds place.

Step 4: Move to the hundreds column.

• 5 + 3 = 8.
• Add the carried-over 1: 8 + 1 = 9.

Final Answer:

  598
+ 302
------
  900

Example 53:

Problem:
Add 764 and 128.

Step 1: Write the numbers vertically.

  764
+ 128
------

Step 2: Start with the ones column.

• 4 + 8 = 12.
• Write down 2 and carry over 1 to the tens place.

Step 3: Move to the tens column.

• 6 + 2 = 8.
• Add the carried-over 1: 8 + 1 = 9.

Step 4: Move to the hundreds column.

• 7 + 1 = 8.
• Write down 8.

Final Answer:

  764
+ 128
------
  892

Example 54:

Problem:
Add 453 and 247.

Step 1: Write the numbers vertically.

  453
+ 247
------

Step 2: Start with the ones column.

• 3 + 7 = 10.
• Write down 0 and carry over 1 to the tens place.

Step 3: Move to the tens column.

• 5 + 4 = 9.
• Add the carried-over 1: 9 + 1 = 10.
• Write down 0 and carry over 1 to the hundreds place.

Step 4: Move to the hundreds column.

• 4 + 2 = 6.
• Add the carried-over 1: 6 + 1 = 7.

Final Answer:

  453
+ 247
------
  700

Example 55:

Problem:
Add 386 and 519.

Step 1: Write the numbers vertically.

  386
+ 519
------

Step 2: Start with the ones column.

• 6 + 9 = 15.
• Write down 5 and carry over 1 to the tens place.

Step 3: Move to the tens column.

• 8 + 1 = 9.
• Add the carried-over 1: 9 + 1 = 10.
• Write down 0 and carry over 1 to the hundreds place.

Step 4: Move to the hundreds column.

• 3 + 5 = 8.
• Add the carried-over 1: 8 + 1 = 9.

Final Answer:

  386
+ 519
------
  905

Example 56:

Problem:
Add 647 and 352.

Step 1: Write the numbers vertically.

  647
+ 352
------

Step 2: Start with the ones column.

• 7 + 2 = 9.
• Write down 9.

Step 3: Move to the tens column.

• 4 + 5 = 9.
• Write down 9.

Step 4: Move to the hundreds column.

• 6 + 3 = 9.
• Write down 9.

Final Answer:

  647
+ 352
------
  999

Example 57:

Problem:
Add 782 and 213.

Step 1: Write the numbers vertically.

  782
+ 213
------

Step 2: Start with the ones column.

• 2 + 3 = 5.
• Write down 5.

Step 3: Move to the tens column.

• 8 + 1 = 9.
• Write down 9.

Step 4: Move to the hundreds column.

• 7 + 2 = 9.
• Write down 9.

Final Answer:

  782
+ 213
------
  995

Example 58:

Problem:
Add 429 and 384.

Step 1: Write the numbers vertically.

  429
+ 384
------

Step 2: Start with the ones column.

• 9 + 4 = 13.
• Write down 3 and carry over 1 to the tens place.

Step 3: Move to the tens column.

• 2 + 8 = 10.
• Add the carried-over 1: 10 + 1 = 11.
• Write down 1 and carry over 1 to the hundreds place.

Step 4: Move to the hundreds column.

• 4 + 3 = 7.
• Add the carried-over 1: 7 + 1 = 8.

Final Answer:

  429
+ 384
------
  813

Example 59:

Problem:
Add 517 and 283.

Step 1: Write the numbers vertically.

  517
+ 283
------

Step 2: Start with the ones column.

• 7 + 3 = 10.
• Write down 0 and carry over 1 to the tens place.

Step 3: Move to the tens column.

• 1 + 8 = 9.
• Add the carried-over 1: 9 + 1 = 10.
• Write down 0 and carry over 1 to the hundreds place.

Step 4: Move to the hundreds column.

• 5 + 2 = 7.
• Add the carried-over 1: 7 + 1 = 8.

Final Answer:

  517
+ 283
------
  800

Example 60:

Problem:
Add 734 and 165.

Step 1: Write the numbers vertically.

  734
+ 165
------

Step 2: Start with the ones column.

• 4 + 5 = 9.
• Write down 9.

Step 3: Move to the tens column.

• 3 + 6 = 9.
• Write down 9.

Step 4: Move to the hundreds column.

• 7 + 1 = 8.
• Write down 8.

Final Answer:

  734
+ 165
------
  899

Example 61:

Problem:
Add 548 and 372.

Step 1: Write the numbers vertically.

  548
+ 372
------

Step 2: Start with the ones column.

• 8 + 2 = 10.
• Write down 0 and carry over 1 to the tens place.

Step 3: Move to the tens column.

• 4 + 7 = 11.
• Add the carried-over 1: 11 + 1 = 12.
• Write down 2 and carry over 1 to the hundreds place.

Step 4: Move to the hundreds column.

• 5 + 3 = 8.
• Add the carried-over 1: 8 + 1 = 9.

Final Answer:

  548
+ 372
------
  920

Example 62:

Problem:
Add 689 and 248.

Step 1: Write the numbers vertically.

  689
+ 248
------

Step 2: Start with the ones column.

• 9 + 8 = 17.
• Write down 7 and carry over 1 to the tens place.

Step 3: Move to the tens column.

• 8 + 4 = 12.
• Add the carried-over 1: 12 + 1 = 13.
• Write down 3 and carry over 1 to the hundreds place.

Step 4: Move to the hundreds column.

• 6 + 2 = 8.
• Add the carried-over 1: 8 + 1 = 9.

Final Answer:

  689
+ 248
------
  937

Example 63:

Problem:
Add 812 and 153.

Step 1: Write the numbers vertically.

  812
+ 153
------

Step 2: Start with the ones column.

• 2 + 3 = 5.
• Write down 5.

Step 3: Move to the tens column.

• 1 + 5 = 6.
• Write down 6.

Step 4: Move to the hundreds column.

• 8 + 1 = 9.

Example 64:

Problem:
Add 591 and 307.

Step 1: Write the numbers vertically.

  591
+ 307
------

Step 2: Start with the ones column.

• 1 + 7 = 8.
• Write down 8.

Step 3: Move to the tens column.

• 9 + 0 = 9.
• Write down 9.

Step 4: Move to the hundreds column.

• 5 + 3 = 8.
• Write down 8.

Final Answer:

  591
+ 307
------
  898

Example 65:

Problem:
Add 418 and 264.

Step 1: Write the numbers vertically.

  418
+ 264
------

Step 2: Start with the ones column.

• 8 + 4 = 12.
• Write down 2 and carry over 1 to the tens place.

Step 3: Move to the tens column.

• 1 + 6 = 7.
• Add the carried-over 1: 7 + 1 = 8.
• Write down 8.

Step 4: Move to the hundreds column.

• 4 + 2 = 6.
• Write down 6.

Final Answer:

  418
+ 264
------
  682

Example 66:

Problem:
Add 739 and 461.

Step 1: Write the numbers vertically.

  739
+ 461
------

Step 2: Start with the ones column.

• 9 + 1 = 10.
• Write down 0 and carry over 1 to the tens place.

Step 3: Move to the tens column.

• 3 + 6 = 9.
• Add the carried-over 1: 9 + 1 = 10.
• Write down 0 and carry over 1 to the hundreds place.

Step 4: Move to the hundreds column.

• 7 + 4 = 11.
• Add the carried-over 1: 11 + 1 = 12.
• Write down 12.

Final Answer:

  739
+ 461
------
 1200

Example 67:

Problem:
Add 554 and 438.

Step 1: Write the numbers vertically.

  554
+ 438
------

Step 2: Start with the ones column.

• 4 + 8 = 12.
• Write down 2 and carry over 1 to the tens place.

Step 3: Move to the tens column.

• 5 + 3 = 8.
• Add the carried-over 1: 8 + 1 = 9.
• Write down 9.

Step 4: Move to the hundreds column.

• 5 + 4 = 9.
• Write down 9.

Final Answer:

  554
+ 438
------
  992

Example 68:

Problem:
Add 417 and 286.

Step 1: Write the numbers vertically.

  417
+ 286
------

Step 2: Start with the ones column.

• 7 + 6 = 13.
• Write down 3 and carry over 1 to the tens place.

Step 3: Move to the tens column.

• 1 + 8 = 9.
• Add the carried-over 1: 9 + 1 = 10.
• Write down 0 and carry over 1 to the hundreds place.

Step 4: Move to the hundreds column.

• 4 + 2 = 6.
• Add the carried-over 1: 6 + 1 = 7.

Final Answer:

  417
+ 286
------
  703

Example 69:

Problem:
Add 356 and 497.

Step 1: Write the numbers vertically.

  356
+ 497
------

Step 2: Start with the ones column.

• 6 + 7 = 13.
• Write down 3 and carry over 1 to the tens place.

Step 3: Move to the tens column.

• 5 + 9 = 14.
• Add the carried-over 1: 14 + 1 = 15.
• Write down 5 and carry over 1 to the hundreds place.

Step 4: Move to the hundreds column.

• 3 + 4 = 7.
• Add the carried-over 1: 7 + 1 = 8.

Final Answer:

  356
+ 497
------
  853

Example 70:

Problem:
Add 582 and 219.

Step 1: Write the numbers vertically.

  582
+ 219
------

Step 2: Start with the ones column.

• 2 + 9 = 11.
• Write down 1 and carry over 1 to the tens place.

Step 3: Move to the tens column.

• 8 + 1 = 9.
• Add the carried-over 1: 9 + 1 = 10.
• Write down 0 and carry over 1 to the hundreds place.

Step 4: Move to the hundreds column.

• 5 + 2 = 7.
• Add the carried-over 1: 7 + 1 = 8.

Final Answer:

  582
+ 219
------
  801

Example 71:

Problem:
Add 647 and 189.

Step 1: Write the numbers vertically.

  647
+ 189
------

Step 2: Start with the ones column.

• 7 + 9 = 16.
• Write down 6 and carry over 1 to the tens place.

Step 3: Move to the tens column.

• 4 + 8 = 12.
• Add the carried-over 1: 12 + 1 = 13.
• Write down 3 and carry over 1 to the hundreds place.

Step 4: Move to the hundreds column.

• 6 + 1 = 7.
• Add the carried-over 1: 7 + 1 = 8.

Final Answer:

  647
+ 189
------
  836

Example 72:

Problem:
Add 784 and 115.

Step 1: Write the numbers vertically.

  784
+ 115
------

Step 2: Start with the ones column.

• 4 + 5 = 9.
• Write down 9.

Step 3: Move to the tens column.

• 8 + 1 = 9.
• Write down 9.

Step 4: Move to the hundreds column.

• 7 + 1 = 8.
• Write down 8.

Final Answer:

  784
+ 115
------
  899

Example 73:

Problem:
Add 459 and 348.

Step 1: Write the numbers vertically.

  459
+ 348
------

Step 2: Start with the ones column.

• 9 + 8 = 17.
• Write down 7 and carry over 1 to the tens place.

Step 3: Move to the tens column.

• 5 + 4 = 9.
• Add the carried-over 1: 9 + 1 = 10.
• Write down 0 and carry over 1 to the hundreds place.

Step 4: Move to the hundreds column.

• 4 + 3 = 7.
• Add the carried-over 1: 7 + 1 = 8.

Final Answer:

  459
+ 348
------
  807

Example 74:

Problem:
Add 923 and 456.

Step 1: Write the numbers vertically.

  923
+ 456
------

Step 2: Start with the ones column.

• 3 + 6 = 9.
• Write down 9.

Step 3: Move to the tens column.

• 2 + 5 = 7.
• Write down 7.

Step 4: Move to the hundreds column.

• 9 + 4 = 13.
• Write down 3 and carry over 1 to the thousands place.

Final Answer:

  923
+ 456
------
 1379

Example 75:

Problem:
Add 514 and 267.

Step 1: Write the numbers vertically.

  514
+ 267
------

Step 2: Start with the ones column.

• 4 + 7 = 11.
• Write down 1 and carry over 1 to the tens place.

Step 3: Move to the tens column.

• 1 + 6 = 7.
• Add the carried-over 1: 7 + 1 = 8.
• Write down 8.

Step 4: Move to the hundreds column.

• 5 + 2 = 7.
• Write down 7.

Final Answer:

  514
+ 267
------
  781

Example 76:

Problem:
Add 563 and 432.

Step 1: Write the numbers vertically.

  563
+ 432
------

Step 2: Start with the ones column.

• 3 + 2 = 5.
• Write down 5.

Step 3: Move to the tens column.

• 6 + 3 = 9.
• Write down 9.

Step 4: Move to the hundreds column.

• 5 + 4 = 9.
• Write down 9.

Final Answer:

  563
+ 432
------
  995

These examples show how to carry over when the sum in any column is 10 or more. Practicing with different numbers helps kids get comfortable with the process.

Practice Problems:

Problem 1:

  426
+ 178
------

Problem 2:

  593
+ 285
------

Problem 3:

  349
+ 271
------

Problem 4:

  807
+ 139
------

Problem 5:

  664
+ 387
------

Problem 6:

  732
+ 248
------

Problem 7:

  915
+ 674
------

Problem 8:

  506
+ 413
------

Problem 9:

  758
+ 349
------

Problem 10:

  624
+ 281
------

Problem 11:

  487
+ 562
------

Problem 12:

  619
+ 374
------

Problem 13:

  253
+ 146
------

Problem 14:

  780
+ 239
------

Problem 15:

  527
+ 418
------

Problem 16:

  398
+ 274
------

Problem 17:

  845
+ 332
------

Problem 18:

  654
+ 297
------

Problem 19:

  739
+ 156
------

Problem 20:

  902
+ 475
------

Problem 21:

   345  
+  678  
-------

Solutions

After working through these problems, we can check our answers by adding the numbers column by column, just like in the examples.

These problems will give you a good amount of practice to solidify our understanding of three-digit addition.