Sure! Let’s solve each of the decimal addition and subtraction problems step by step. The key is to
line up the decimal points and then add or subtract as you would with whole numbers, keeping the decimal point in the same column.
---
🔢 Row 1: Addition
1. 46.5 + 21.1
```
46.5
+ 21.1
------
67.6
```
✔ Answer: 67.6
---
2. 36.5 + 33.4
```
36.5
+ 33.4
------
69.9
```
✔ Answer: 69.9
---
3. 50.8 + 38.0
```
50.8
+ 38.0
------
88.8
```
✔ Answer: 88.8
---
4. 71.1 + 4.2
```
71.1
+ 4.2
------
75.3
```
✔ Answer: 75.3
---
🔢 Row 2: Addition (with two decimal places)
5. 16.17 + 29.57
```
16.17
+ 29.57
-------
45.74
```
✔ Answer: 45.74
---
6. 8.17 + 83.17
```
8.17
+ 83.17
-------
91.34
```
✔ Answer: 91.34
---
7. 27.59 + 18.33
```
27.59
+ 18.33
-------
45.92
```
✔ Answer: 45.92
---
8. 2.59 + 68.33
```
2.59
+ 68.33
-------
70.92
```
✔ Answer: 70.92
---
🔢 Row 3: Subtraction
9. 90.6 - 25.3
```
90.6
- 25.3
------
65.3
```
✔ Answer: 65.3
---
10. 51.6 - 46.0
```
51.6
- 46.0
------
5.6
```
✔ Answer: 5.6
---
11. 70.3 - 22.3
```
70.3
- 22.3
------
48.0
```
✔ Answer: 48.0 (or just 48)
---
12. 93.5 - 14.0
```
93.5
- 14.0
------
79.5
```
✔ Answer: 79.5
---
🔢 Row 4: Subtraction (with two decimal places)
13. 71.74 - 41.61
```
71.74
- 41.61
-------
30.13
```
✔ Answer: 30.13
---
14. 98.76 - 74.76
```
98.76
- 74.76
-------
24.00
```
✔ Answer: 24.00 (or just 24)
---
15. 59.98 - 19.94
```
59.98
- 19.94
-------
40.04
```
✔ Answer: 40.04
---
16. 94.95 - 84.92
```
94.95
- 84.92
-------
10.03
```
✔ Answer: 10.03
---
##
✔ Final Answers (in order):
1.
67.6
2.
69.9
3.
88.8
4.
75.3
5.
45.74
6.
91.34
7.
45.92
8.
70.92
9.
65.3
10.
5.6
11.
48.0
12.
79.5
13.
30.13
14.
24.00
15.
40.04
16.
10.03
---
💡
Tip for students: Always line up the decimal points before adding or subtracting. You can add trailing zeros if needed (e.g., 5.6 becomes 5.60) to make columns match — this helps avoid mistakes!
Let me know if you’d like a printable version or want to check your work against these answers! 😊
Parent Tip: Review the logic above to help your child master the concept of adding and subtracting decimals worksheets.
