Sure! Let’s solve each decimal addition problem step by step. The key to adding decimals is to
line up the decimal points and add as you would with whole numbers, keeping the decimal point in the same position in the answer.
---
1. 41.5 + 19.8
```
41.5
+ 19.8
------
61.3
```
✔ Answer: 61.3
---
2. 17.7 + 5.7
```
17.7
+ 5.7
------
23.4
```
✔ Answer: 23.4
---
3. 11.2 + 6.8
```
11.2
+ 6.8
------
18.0 → or just 18
```
✔ Answer: 18
---
4. 6.1 + 33.8
```
6.1
+ 33.8
------
39.9
```
✔ Answer: 39.9
---
5. 19.3 + 23.8
```
19.3
+ 23.8
------
43.1
```
✔ Answer: 43.1
---
6. 23.5 + 9.6
```
23.5
+ 9.6
------
33.1
```
✔ Answer: 33.1
---
7. 42.8 + 32.1
```
42.8
+ 32.1
------
74.9
```
✔ Answer: 74.9
---
8. 22.7 + 13.8
```
22.7
+ 13.8
------
36.5
```
✔ Answer: 36.5
---
9. 13.3 + 24.8
```
13.3
+ 24.8
------
38.1
```
✔ Answer: 38.1
---
10. 12.3 + 5.9
```
12.3
+ 5.9
------
18.2
```
✔ Answer: 18.2
---
11. 19.23 + 28.41
Now we have
two decimal places, so line them up carefully:
```
19.23
+ 28.41
-------
47.64
```
✔ Answer: 47.64
---
12. 4.32 + 22.67
```
4.32
+ 22.67
-------
26.99
```
✔ Answer: 26.99
---
##
✔ Final Answers (in order):
1.
61.3
2.
23.4
3.
18
4.
39.9
5.
43.1
6.
33.1
7.
74.9
8.
36.5
9.
38.1
10.
18.2
11.
47.64
12.
26.99
---
## 💡 Tip for Adding Decimals:
Always align the decimal points vertically before adding. If one number has fewer decimal places, you can add zeros at the end (e.g., 5.7 becomes 5.70) to make it easier — though it’s not required if you’re careful with place value.
Let me know if you’d like a printable version or worksheet with answers! 😊
Parent Tip: Review the logic above to help your child master the concept of adding decimal numbers worksheet.
