Let's solve each of the decimal addition problems step by step. We'll line up the decimals properly and add them carefully.
---
Left Column:
1.
45.3 + 9.9
```
45.3
+ 9.9
------
55.2
```
✔ Answer: 55.2
2.
6.7 + 39.7
```
6.7
+ 39.7
------
46.4
```
✔ Answer: 46.4
3.
16.8 + 17.5
```
16.8
+ 17.5
------
34.3
```
✔ Answer: 34.3
4.
9.2 + 8.8
```
9.2
+ 8.8
------
18.0
```
✔ Answer: 18.0 (or just
18)
5.
16.3 + 18.8
```
16.3
+ 18.8
------
35.1
```
✔ Answer: 35.1
6.
2.53 + 4.5
First, align decimals:
```
2.53
+ 4.50
------
7.03
```
✔ Answer: 7.03
7.
95.6 + 8.64
Align decimals:
```
95.60
+ 8.64
-------
104.24
```
✔ Answer: 104.24
8.
17.7 + 22.3
```
17.7
+ 22.3
------
40.0
```
✔ Answer: 40.0 (or
40)
9.
8.95 + 9.2
Align decimals:
```
8.95
+ 9.20
-------
18.15
```
✔ Answer: 18.15
10.
6.3 + 7.55
Align decimals:
```
6.30
+ 7.55
-------
13.85
```
✔ Answer: 13.85
---
Right Column:
1.
9.63 + 2.88
```
9.63
+ 2.88
------
12.51
```
✔ Answer: 12.51
2.
5.74 + 9.9
Align decimals:
```
5.74
+ 9.90
------
15.64
```
✔ Answer: 15.64
3.
4.12 + 6.31
```
4.12
+ 6.31
------
10.43
```
✔ Answer: 10.43
4.
92.3 + 9.32
Align decimals:
```
92.30
+ 9.32
-------
101.62
```
✔ Answer: 101.62
5.
74.3 + 83.5
```
74.3
+ 83.5
------
157.8
```
✔ Answer: 157.8
6.
4.21 + 9.6
Align decimals:
```
4.21
+ 9.60
------
13.81
```
✔ Answer: 13.81
7.
47.3 + 52.9
```
47.3
+ 52.9
------
100.2
```
✔ Answer: 100.2
8.
45.4 + 8.6
```
45.4
+ 8.6
------
54.0
```
✔ Answer: 54.0 (or
54)
9.
36.2 + 4.78
Align decimals:
```
36.20
+ 4.78
-------
40.98
```
✔ Answer: 40.98
10.
6.63 + 82.1
Align decimals:
```
6.63
+ 82.10
-------
88.73
```
✔ Answer: 88.73
---
✔ Final Answers:
Left Column:
1. 55.2
2. 46.4
3. 34.3
4. 18.0
5. 35.1
6. 7.03
7. 104.24
8. 40.0
9. 18.15
10. 13.85
Right Column:
1. 12.51
2. 15.64
3. 10.43
4. 101.62
5. 157.8
6. 13.81
7. 100.2
8. 54.0
9. 40.98
10. 88.73
---
✔ All problems solved! Let me know if you'd like this formatted as a printable answer sheet.
Parent Tip: Review the logic above to help your child master the concept of addition worksheet fifth grade.
