Let's solve the problem step by step.
The task is to
add a 3-digit number and a 1-digit number without regrouping. This means we are adding a single digit to a three-digit number, and the sum in the ones place should not exceed 9 (so no carrying over to the tens place).
We will go through each addition problem:
---
Row 1:
1.
740 + 9
- 0 + 9 = 9 →
749
2.
761 + 2
- 1 + 2 = 3 →
763
3.
253 + 4
- 3 + 4 = 7 →
257
4.
635 + 4
- 5 + 4 = 9 →
639
---
Row 2:
5.
566 + 3
- 6 + 3 = 9 →
569
6.
381 + 2
- 1 + 2 = 3 →
383
7.
501 + 3
- 1 + 3 = 4 →
504
8.
313 + 2
- 3 + 2 = 5 →
315
---
Row 3:
9.
152 + 4
- 2 + 4 = 6 →
156
10.
921 + 5
- 1 + 5 = 6 →
926
11.
261 + 7
- 1 + 7 = 8 →
268
12.
562 + 6
- 2 + 6 = 8 →
568
---
Row 4:
13.
323 + 1
- 3 + 1 = 4 →
324
14.
624 + 3
- 4 + 3 = 7 →
627
15.
911 + 8
- 1 + 8 = 9 →
919
16.
842 + 7
- 2 + 7 = 9 →
849
---
✔ Final Answers:
| Problem | Answer |
|--------|--------|
| 740 + 9 |
749 |
| 761 + 2 |
763 |
| 253 + 4 |
257 |
| 635 + 4 |
639 |
| 566 + 3 |
569 |
| 381 + 2 |
383 |
| 501 + 3 |
504 |
| 313 + 2 |
315 |
| 152 + 4 |
156 |
| 921 + 5 |
926 |
| 261 + 7 |
268 |
| 562 + 6 |
568 |
| 323 + 1 |
324 |
| 624 + 3 |
627 |
| 911 + 8 |
919 |
| 842 + 7 |
849 |
---
🔍 Explanation:
- We only add the
ones digits (the rightmost digits).
- Since there is
no regrouping, we just replace the ones digit with the sum of the original ones digit and the 1-digit number.
- The hundreds and tens digits remain unchanged.
✔ All sums are valid because none of the ones-place additions exceed 9, so no carrying is needed.
Let me know if you'd like this as a printable answer sheet!
Parent Tip: Review the logic above to help your child master the concept of printable addition worksheets without regrouping.
