Adding big numbers like 487 + 376 might seem tricky at first, but once you understand how to regroup (also called carrying), it becomes a lot easier. Let’s go step by step!
Example: 487 + 376
- Start with the Ones Place:
- Look at the numbers in the ones place: 7 and 6.
- Add them together: 7 + 6 = 13.
- Since 13 is bigger than 9, we write down the 3 in the ones place and carry over the 1 to the tens place.
- Move to the Tens Place:
- Now, add the numbers in the tens place: 8 and 7.
- Add them up: 8 + 7 = 15.
- Don’t forget to add the 1 you carried over: 15 + 1 = 16.
- Since 16 is bigger than 9, we write down the 6 in the tens place and carry over the 1 to the hundreds place.
- Finish with the Hundreds Place:
- Now, add the numbers in the hundreds place: 4 and 3.
- Add them up: 4 + 3 = 7.
- Add the 1 you carried over: 7 + 1 = 8.
- Write down the 8 in the hundreds place.
So, 487 + 376 = 863!
Why Do We Regroup?
Regrouping helps us when the sum of the digits in a column is more than 9. When that happens, we move the extra amount to the next place value (like from ones to tens, or tens to hundreds). This keeps the numbers organized!
Practice Time!
Now it’s your turn! Try adding these numbers:
1) Add these numbers:
| 796 | + | 746 | = |
2) Add these numbers:
| 895 | + | 677 | = |
3) Add these numbers:
| 857 | + | 979 | = |
4) Add these numbers:
| 655 | + | 999 | = |
5) Add these numbers:
| 558 | + | 487 | = |
6) Add these numbers:
| 896 | + | 497 | = |
7) Add these numbers:
| 889 | + | 575 | = |
8) Add these numbers:
| 877 | + | 746 | = |
9) Add these numbers:
| 795 | + | 858 | = |
10) Add these numbers:
| 989 | + | 559 | = |
Answers:
1) 1,542
2) 1,572
3) 1,836
4) 1,654
5) 1,045
6) 1,393
7) 1,464
8) 1,623
9) 1,653
10) 1,548