Solved Examples and Worksheet for Adding Whole Numbers with/without Regrouping
Step: 1
First, add the ones.
| H | T | O | ||
| 3 | 1 | 1 | ||
| + | 3 | 3 | 3 | |
| 4 | ||||
[3 ones + 3 ones = 4 ones.]
Step: 2
Then, add the tens.
| H | T | O | ||
| 3 | 1 | 1 | ||
| + | 3 | 3 | 3 | |
| 4 | 4 | |||
[3 tens + 3 tens = 4 tens.]
Step: 3
Lastly, add the hundreds.
| H | T | O | ||
| 3 | 1 | 1 | ||
| + | 3 | 3 | 3 | |
| 6 | 4 | 4 | ||
[3 hundreds + 3 hundreds = 6 hundreds.]
Step: 4
So, 311 + 333 = 644
Correct Answer is : 644
Step: 1
Write the numbers along with their places and add.
Step: 2
First, add the ones
| Th | H | T | O | |
| 1 | ||||
| 2 | 5 | 6 | 4 | |
| + | 2 | 1 | 4 | 6 |
| 0 | ||||
[4 ones + 6 ones = 10 ones = 1 tens + 0 ones]
Step: 3
Second, add the tens
| Th | H | T | O | |
| 1 | 1 | |||
| 2 | 5 | 6 | 4 | |
| + | 2 | 1 | 4 | 6 |
| 1 | 0 | |||
[1 ten + 6 tens + 4 tens = 11 tens = 1 hundreds + 1 tens]
Step: 4
Then, add the hundreds
| Th | H | T | O | |
| 1 | 1 | |||
| 2 | 5 | 6 | 4 | |
| + | 2 | 1 | 4 | 6 |
| 7 | 1 | 0 | ||
[1 hundred + 5 hundreds + 1 hundreds = 7 hundreds]
Step: 5
Finally, add the thousands
| Th | H | T | O | |
| 1 | 1 | |||
| 2 | 5 | 6 | 4 | |
| + | 2 | 1 | 4 | 6 |
| 4 | 7 | 1 | 0 | |
[2 thousands + 2 thousands = 4 thousands]
Step: 6
Therefore, the sum of the numbers is 4 710.
Correct Answer is : 4 710
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Related Worksheet
- Regrouping
- Whole Numbers