Absolutely! Let’s solve each of the multiplication problems step by step. The worksheet says
“Multiply 3 digits by 1 digit without Regrouping”, which means when we multiply each digit, the result should be a single digit (0–9), so we don’t have to carry over any numbers to the next column.
---
✔ Problem 1: 721 × 4
We multiply each digit from right to left:
-
Ones place: 1 × 4 =
4
-
Tens place: 2 × 4 =
8
-
Hundreds place: 7 × 4 =
28 ← Uh oh! This is
two digits — that means we
would need to regroup!
But wait — the worksheet says “
without regrouping”. That implies these problems are *designed* so that no regrouping is needed. So let’s double-check our math or the problem.
Actually,
7 × 4 = 28 — this requires regrouping (carry the 2). So either this problem is mislabeled, or we’re allowed to do it anyway? But since the instruction says “without regrouping”, perhaps there’s an error — OR maybe we proceed and just write the full product.
Let’s go ahead and compute correctly:
```
721
× 4
------
2884
```
✔ Answer: 2884
*(Note: This problem actually requires regrouping, but we’ll still compute it accurately.)*
---
✔ Problem 2: 304 × 2
Multiply each digit:
-
Ones: 4 × 2 =
8
-
Tens: 0 × 2 =
0
-
Hundreds: 3 × 2 =
6
No regrouping needed!
```
304
× 2
------
608
```
✔ Answer: 608
---
✔ Problem 3: 612 × 4
Check for regrouping:
-
Ones: 2 × 4 =
8
-
Tens: 1 × 4 =
4
-
Hundreds: 6 × 4 =
24 ← Again, two digits → needs regrouping.
So again, technically violates “without regrouping”, but let’s compute:
```
612
× 4
------
2448
```
✔ Answer: 2448
---
✔ Problem 4: 910 × 5
Check:
-
Ones: 0 × 5 =
0
-
Tens: 1 × 5 =
5
-
Hundreds: 9 × 5 =
45 ← Two digits → needs regrouping.
Compute:
```
910
× 5
------
4550
```
✔ Answer: 4550
---
✔ Problem 5: 723 × 1
Multiplying by 1 is easy — anything × 1 is itself.
-
Ones: 3 × 1 =
3
-
Tens: 2 × 1 =
2
-
Hundreds: 7 × 1 =
7
No regrouping needed!
✔ Answer: 723
---
✔ Problem 6: 923 × 3
Check:
-
Ones: 3 × 3 =
9
-
Tens: 2 × 3 =
6
-
Hundreds: 9 × 3 =
27 ← Two digits → needs regrouping.
Compute:
```
923
× 3
------
2769
```
✔ Answer: 2769
---
## 📝 Final Answers:
| Problem | Answer |
|----------------|--------|
| 721 × 4 | 2884 |
| 304 × 2 | 608 |
| 612 × 4 | 2448 |
| 910 × 5 | 4550 |
| 723 × 1 | 723 |
| 923 × 3 | 2769 |
---
## 🔍 Note on “Without Regrouping”:
Technically, only
304 × 2 and
723 × 1 can be solved without regrouping, because in all others, multiplying the hundreds digit by the 1-digit number gives a 2-digit result (e.g., 7×4=28, 6×4=24, etc.), which requires carrying over.
It’s possible the worksheet meant “solve these problems” and “without regrouping” was meant for simpler problems — or perhaps it’s a trick to test understanding.
In any case, we’ve computed all products correctly!
---
✔ All problems solved!
Parent Tip: Review the logic above to help your child master the concept of multiplication with regrouping worksheet.
