Let’s solve each 3-digit addition problem step by step. Since the worksheet says “No Regrouping,” we can add each column (ones, tens, hundreds) directly without carrying over.
We’ll go row by row, left to right.
---
First Row:
1.
243 + 532
- Ones: 3 + 2 = 5
- Tens: 4 + 3 = 7
- Hundreds: 2 + 5 = 7
→
775
2.
634 + 213
- Ones: 4 + 3 = 7
- Tens: 3 + 1 = 4
- Hundreds: 6 + 2 = 8
→
847
3.
234 + 521
- Ones: 4 + 1 = 5
- Tens: 3 + 2 = 5
- Hundreds: 2 + 5 = 7
→
755
---
Second Row:
4.
263 + 524
- Ones: 3 + 4 = 7
- Tens: 6 + 2 = 8
- Hundreds: 2 + 5 = 7
→
787
5.
234 + 263
- Ones: 4 + 3 = 7
- Tens: 3 + 6 = 9
- Hundreds: 2 + 2 = 4
→
497
6.
264 + 732
- Ones: 4 + 2 = 6
- Tens: 6 + 3 = 9
- Hundreds: 2 + 7 = 9
→
996
---
Third Row:
7.
354 + 532
- Ones: 4 + 2 = 6
- Tens: 5 + 3 = 8
- Hundreds: 3 + 5 = 8
→
886
8.
425 + 323
- Ones: 5 + 3 = 8
- Tens: 2 + 2 = 4
- Hundreds: 4 + 3 = 7
→
748
9.
532 + 254
- Ones: 2 + 4 = 6
- Tens: 3 + 5 = 8
- Hundreds: 5 + 2 = 7
→
786
---
Fourth Row:
10.
413 + 323
- Ones: 3 + 3 = 6
- Tens: 1 + 2 = 3
- Hundreds: 4 + 3 = 7
→
736
11.
253 + 134
- Ones: 3 + 4 = 7
- Tens: 5 + 3 = 8
- Hundreds: 2 + 1 = 3
→
387
12.
432 + 252
- Ones: 2 + 2 = 4
- Tens: 3 + 5 = 8
- Hundreds: 4 + 2 = 6
→
684
---
All problems solved with no regrouping needed — just adding digit by digit in each place value.
Final Answer:
775
847
755
787
497
996
886
748
786
736
387
684
Parent Tip: Review the logic above to help your child master the concept of 3 digit addition worksheet no regrouping.
