Let's solve each problem step by step. We'll carefully add and subtract the decimals, making sure to align the decimal points correctly.
---
1. 13.6 + 25.1
Align the decimals:
```
13.6
+ 25.1
------
38.7
```
✔ Answer: 38.7
---
2. 0.856 + 0.387
Align the decimals:
```
0.856
+ 0.387
-------
1.243
```
✔ Answer: 1.243
---
3. 15.42 - 3.95
Align the decimals:
```
15.42
- 3.95
-------
11.47
```
✔ Answer: 11.47
---
4. 0.365 - 0.2814
We need to make both numbers have the same number of decimal places. Add a zero to 0.365 → 0.3650
```
0.3650
- 0.2814
--------
0.0836
```
✔ Answer: 0.0836
---
5. 23.09 + 13.79
Align the decimals:
```
23.09
+ 13.79
-------
36.88
```
✔ Answer: 36.88
---
6. 10.56 - 9.605
Make both numbers have same decimal places. Add a zero to 10.56 → 10.560
```
10.560
- 9.605
--------
0.955
```
✔ Answer: 0.955
---
✔ Final Answers:
1.
38.7
2.
1.243
3.
11.47
4.
0.0836
5.
36.88
6.
0.955
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 worksheet on adding and subtracting decimals.
