Let's solve each of the multiplication problems step by step using the standard algorithm (also known as long multiplication). We'll multiply the numbers digit by digit, then add the partial products.
---
1. 66 × 27
Break it down:
- 66 × 7 = 462
- 66 × 20 = 1,320
Now add:
```
462
+1320
-----
1782
```
✔ Answer: 1,782
---
2. 83 × 36
- 83 × 6 = 498
- 83 × 30 = 2,490
Add:
```
498
+2490
-----
2988
```
✔ Answer: 2,988
---
3. 68 × 28
- 68 × 8 = 544
- 68 × 20 = 1,360
Add:
```
544
+1360
-----
1904
```
✔ Answer: 1,904
---
4. 72 × 34
- 72 × 4 = 288
- 72 × 30 = 2,160
Add:
```
288
+2160
-----
2448
```
✔ Answer: 2,448
---
5. 98 × 37
- 98 × 7 = 686
- 98 × 30 = 2,940
Add:
```
686
+2940
-----
3626
```
✔ Answer: 3,626
---
6. 49 × 25
- 49 × 5 = 245
- 49 × 20 = 980
Add:
```
245
+ 980
-----
1225
```
✔ Answer: 1,225
---
7. 90 × 22
- 90 × 2 = 180
- 90 × 20 = 1,800
Add:
```
180
+1800
-----
1980
```
✔ Answer: 1,980
---
8. 67 × 43
- 67 × 3 = 201
- 67 × 40 = 2,680
Add:
```
201
+2680
-----
2881
```
✔ Answer: 2,881
---
9. 52 × 72
- 52 × 2 = 104
- 52 × 70 = 3,640
Add:
```
104
+3640
-----
3744
```
✔ Answer: 3,744
---
✔ Final Answers:
1. 66 × 27 =
1,782
2. 83 × 36 =
2,988
3. 68 × 28 =
1,904
4. 72 × 34 =
2,448
5. 98 × 37 =
3,626
6. 49 × 25 =
1,225
7. 90 × 22 =
1,980
8. 67 × 43 =
2,881
9. 52 × 72 =
3,744
---
Let me know if you'd like these written out in a formatted worksheet style!
Parent Tip: Review the logic above to help your child master the concept of double digit multiplication worksheets.