Let's solve each of the double-digit multiplication problems step by step. We'll use the standard algorithm for multiplication (also known as long multiplication).
---
1. 19 × 22
```
19
×22
----
38 ← 19 × 2
380 ← 19 × 20 (shifted one place to the left)
----
418
```
✔ Answer: 418
---
2. 23 × 64
```
23
×64
----
92 ← 23 × 4
1380 ← 23 × 60 (shifted one place to the left)
----
1472
```
✔ Answer: 1472
---
3. 37 × 15
```
37
×15
----
185 ← 37 × 5
370 ← 37 × 10 (shifted)
----
555
```
✔ Answer: 555
---
4. 54 × 55
```
54
×55
----
270 ← 54 × 5
2700 ← 54 × 50 (shifted)
----
2970
```
✔ Answer: 2970
---
5. 14 × 64
```
14
×64
----
56 ← 14 × 4
840 ← 14 × 60 (shifted)
----
904
```
✔ Answer: 904
---
6. 71 × 82
```
71
×82
----
142 ← 71 × 2
5680 ← 71 × 80 (shifted)
----
5822
```
✔ Answer: 5822
---
7. 98 × 43
```
98
×43
----
294 ← 98 × 3
3920 ← 98 × 40 (shifted)
----
4214
```
✔ Answer: 4214
---
8. 15 × 16
```
15
×16
----
90 ← 15 × 6
150 ← 15 × 10 (shifted)
----
240
```
✔ Answer: 240
---
9. 27 × 36
```
27
×36
----
162 ← 27 × 6
810 ← 27 × 30 (shifted)
----
972
```
✔ Answer: 972
---
10. 62 × 74
```
62
×74
----
248 ← 62 × 4
4340 ← 62 × 70 (shifted)
----
4588
```
✔ Answer: 4588
---
11. 83 × 23
```
83
×23
----
249 ← 83 × 3
1660 ← 83 × 20 (shifted)
----
1909
```
✔ Answer: 1909
---
12. 48 × 91
```
48
×91
----
48 ← 48 × 1
4320 ← 48 × 90 (shifted)
----
4368
```
✔ Answer: 4368
---
✔ Final Answers:
1. 19 × 22 =
418
2. 23 × 64 =
1472
3. 37 × 15 =
555
4. 54 × 55 =
2970
5. 14 × 64 =
904
6. 71 × 82 =
5822
7. 98 × 43 =
4214
8. 15 × 16 =
240
9. 27 × 36 =
972
10. 62 × 74 =
4588
11. 83 × 23 =
1909
12. 48 × 91 =
4368
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Let me know if you'd like a printable version or explanation in another format!
Parent Tip: Review the logic above to help your child master the concept of double digit multiplication worksheets.
