Let’s solve each problem one by one, carefully aligning the decimal points and performing addition or subtraction as needed.
---
1. 22.774 + 8.874
Align decimals:
```
22.774
+ 8.874
--------
31.648
```
✔ Correct.
---
2. 99.37 + 88.42
Align decimals (add zeros if needed for clarity):
```
99.37
+ 88.42
-------
187.79
```
✔ Correct.
---
3. 66.344 - 33.122
```
66.344
- 33.122
--------
33.222
```
✔ Correct.
---
4. 98.145 + 24.21
Write 24.21 as 24.210 to match decimal places:
```
98.145
+ 24.210
--------
122.355
```
✔ Correct.
---
5. 9.8 - 0.8
Simple subtraction:
```
9.8
- 0.8
-----
9.0 → which is just 9
```
✔ Correct.
---
6. 5.7 + 5.9
```
5.7
+ 5.9
-----
11.6
```
✔ Correct.
---
7. 19.19 - 17.17
```
19.19
- 17.17
-------
2.02
```
✔ Correct.
---
8. 122.37 + 23.48
```
122.37
+ 23.48
-------
145.85
```
✔ Correct.
---
9. 9.3 - 4.9
```
9.3
- 4.9
-----
4.4
```
✔ Correct.
---
10. 257.17 - 253.59
```
257.17
- 253.59
--------
3.58
```
Wait — let’s check:
257.17 minus 253.59:
Start from right:
- 7 - 9 → borrow → 17 - 9 = 8
- 0 (after borrow) - 5 → borrow again → 10 - 5 = 5? Wait, better to do step-by-step:
Actually:
```
257.17
- 253.59
--------
```
Hundredths: 7 - 9 → can’t → borrow from tenths → 17 - 9 = 8
Tenths: now 0 (was 1, borrowed) - 5 → can’t → borrow from units → 10 - 5 = 5
Units: was 7, became 6 after borrow → 6 - 3 = 3
Tens: 5 - 5 = 0
Hundreds: 2 - 2 = 0
So result is
3.58
✔ Correct.
---
11. 8.7 + 6.63
Write 8.7 as 8.70:
```
8.70
+ 6.63
------
15.33
```
✔ Correct.
---
12. 69.67 - 67.69
```
69.67
- 67.69
-------
1.98
```
Check:
Hundredths: 7 - 9 → borrow → 17 - 9 = 8
Tenths: 5 (after borrow) - 6 → borrow → 15 - 6 = 9
Units: 8 (after borrow) - 7 = 1
Tens: 6 - 6 = 0
→ 1.98
✔
---
13. 0.17 - 0.09
```
0.17
- 0.09
------
0.08
```
✔ Correct.
---
14. 8.27 + 18.97
```
8.27
+ 18.97
-------
27.24
```
Check: 8 + 18 = 26; 0.27 + 0.97 = 1.24 → total 27.24
✔
---
15. 14.33 - 2.17
```
14.33
- 2.17
-------
12.16
```
Check: 14.33 - 2 = 12.33; then -0.17 → 12.16
✔
---
16. 637.9 - 216.6
Write as 637.90 - 216.60 for alignment:
```
637.90
- 216.60
--------
421.30 → or 421.3
```
✔ Correct.
---
Final Answers List:
1. 31.648
2. 187.79
3. 33.222
4. 122.355
5. 9
6. 11.6
7. 2.02
8. 145.85
9. 4.4
10. 3.58
11. 15.33
12. 1.98
13. 0.08
14. 27.24
15. 12.16
16. 421.3
---
Final Answer:
31.648, 187.79, 33.222, 122.355, 9, 11.6, 2.02, 145.85, 4.4, 3.58, 15.33, 1.98, 0.08, 27.24, 12.16, 421.3
Parent Tip: Review the logic above to help your child master the concept of adding and subtracting decimals worksheet 5th grade.
![Add and Subtract Decimal Ten Thousandths [E] Worksheet for 4th ...](/images2/adding-and-subtracting-decimals-worksheet-5th-grade/adding-and-subtracting-decimals-worksheet-5th-grade-14.jpg)
