Let's solve each multiplication problem in the grid step by step.
---
1. 234 × 12
Break it down:
- 234 × 2 = 468
- 234 × 10 = 2,340
Now add:
```
468
+2340
-----
2808
```
✔ Answer: 2,808
---
2. 432 × 21
Break it down:
- 432 × 1 = 432
- 432 × 20 = 8,640
Add:
```
432
+8640
-----
9072
```
✔ Answer: 9,072
---
3. 324 × 11
Use the trick:
Multiply by 10 and add the original number.
- 324 × 10 = 3,240
- 324 × 1 = 324
- Add: 3,240 + 324 = 3,564
✔ Answer: 3,564
---
4. 622 × 31
Break it down:
- 622 × 1 = 622
- 622 × 30 = 18,660
Add:
```
622
+18660
------
19282
```
✔ Answer: 19,282
---
5. 135 × 21
- 135 × 1 = 135
- 135 × 20 = 2,700
Add:
```
135
+2700
-----
2835
```
✔ Answer: 2,835
---
6. 531 × 22
Break it down:
- 531 × 2 = 1,062
- 531 × 20 = 10,620
Add:
```
1062
+10620
------
11682
```
✔ Answer: 11,682
---
7. 711 × 13
- 711 × 3 = 2,133
- 711 × 10 = 7,110
Add:
```
2133
+7110
-----
9243
```
✔ Answer: 9,243
---
8. 421 × 31
- 421 × 1 = 421
- 421 × 30 = 12,630
Add:
```
421
+12630
------
13051
```
✔ Answer: 13,051
---
9. 231 × 32
- 231 × 2 = 462
- 231 × 30 = 6,930
Add:
```
462
+6930
-----
7392
```
✔ Answer: 7,392
---
✔ Final Answers:
| Problem | Answer |
|---------------|------------|
| 234 × 12 | 2,808 |
| 432 × 21 | 9,072 |
| 324 × 11 | 3,564 |
| 622 × 31 | 19,282 |
| 135 × 21 | 2,835 |
| 531 × 22 | 11,682 |
| 711 × 13 | 9,243 |
| 421 × 31 | 13,051 |
| 231 × 32 | 7,392 |
You can now fill these answers into the grid!
Let me know if you'd like a visual version or explanation of any specific step!
Parent Tip: Review the logic above to help your child master the concept of 3 digit multiplication worksheets.
