Let's solve each of the double-digit addition problems step by step. We'll add the numbers in each box and show the work.
---
1. 20 + 14
```
20
+ 14
----
34
```
Explanation:
Add the ones: 0 + 4 = 4
Add the tens: 2 + 1 = 3
Answer:
34
---
2. 42 + 54
```
42
+ 54
----
96
```
Explanation:
Add the ones: 2 + 4 = 6
Add the tens: 4 + 5 = 9
Answer:
96
---
3. 17 + 32
```
17
+ 32
----
49
```
Explanation:
Add the ones: 7 + 2 = 9
Add the tens: 1 + 3 = 4
Answer:
49
---
4. 24 + 25
```
24
+ 25
----
49
```
Explanation:
Add the ones: 4 + 5 = 9
Add the tens: 2 + 2 = 4
Answer:
49
---
5. 94 + 5
```
94
+ 5
----
99
```
Explanation:
Add the ones: 4 + 5 = 9
Tens remain: 9
Answer:
99
---
6. 26 + 33
```
26
+ 33
----
59
```
Explanation:
Add the ones: 6 + 3 = 9
Add the tens: 2 + 3 = 5
Answer:
59
---
7. 31 + 23
```
31
+ 23
----
54
```
Explanation:
Add the ones: 1 + 3 = 4
Add the tens: 3 + 2 = 5
Answer:
54
---
8. 36 + 42
```
36
+ 42
----
78
```
Explanation:
Add the ones: 6 + 2 = 8
Add the tens: 3 + 4 = 7
Answer:
78
---
9. 51 + 31
```
51
+ 31
----
82
```
Explanation:
Add the ones: 1 + 1 = 2
Add the tens: 5 + 3 = 8
Answer:
82
---
10. 82 + 10
```
82
+ 10
----
92
```
Explanation:
Add the ones: 2 + 0 = 2
Add the tens: 8 + 1 = 9
Answer:
92
---
11. 55 + 14
```
55
+ 14
----
69
```
Explanation:
Add the ones: 5 + 4 = 9
Add the tens: 5 + 1 = 6
Answer:
69
---
12. 66 + 23
```
66
+ 23
----
89
```
Explanation:
Add the ones: 6 + 3 = 9
Add the tens: 6 + 2 = 8
Answer:
89
---
✔ Final Answers:
Here are all the answers filled in:
| 20 + 14 =
34 | 42 + 54 =
96 | 17 + 32 =
49 |
|------------------|------------------|------------------|
| 24 + 25 =
49 | 94 + 5 =
99 | 26 + 33 =
59 |
| 31 + 23 =
54 | 36 + 42 =
78 | 51 + 31 =
82 |
| 82 + 10 =
92 | 55 + 14 =
69 | 66 + 23 =
89 |
Let me know if you'd like this formatted as a printable worksheet!
Parent Tip: Review the logic above to help your child master the concept of adding two digit numbers without regrouping worksheet.
