Let's solve each of the decimal addition and subtraction problems step by step.
---
1) 4.32 + 12.16
Align decimals:
```
4.32
+12.16
------
16.48
```
✔ Answer: 16.48
---
2) 12.16 - 3.14
```
12.16
- 3.14
------
9.02
```
✔ Answer: 9.02
---
3) 46.30 - 03.67
Note: 03.67 is same as 3.67
```
46.30
- 3.67
------
42.63
```
✔ Answer: 42.63
---
4) 2.1 + 21.83
Write 2.1 as 2.10 to align decimals:
```
2.10
+21.83
------
23.93
```
✔ Answer: 23.93
---
5) 1.89 + 5.91
```
1.89
+ 5.91
------
7.80
```
✔ Answer: 7.80 (or simply
7.8)
---
6) 23.7 + 16.1
```
23.7
+16.1
-----
39.8
```
✔ Answer: 39.8
---
7) 15.47 + 12.26
```
15.47
+12.26
------
27.73
```
✔ Answer: 27.73
---
8) 1.7 - 18.58
Since 1.7 < 18.58, result will be negative.
Write 1.7 as 1.70:
```
1.70
-18.58
------
-16.88
```
✔ Answer: -16.88
---
9) 19.16 + 2.48
```
19.16
+ 2.48
------
21.64
```
✔ Answer: 21.64
---
10) 8.8 - 8.8
Any number minus itself is zero.
✔ Answer: 0
---
✔ Final Answers:
1)
16.48
2)
9.02
3)
42.63
4)
23.93
5)
7.80 (or
7.8)
6)
39.8
7)
27.73
8)
-16.88
9)
21.64
10)
0
Let me know if you'd like this formatted for printing or need explanations in a different format!
Parent Tip: Review the logic above to help your child master the concept of adding decimal worksheet.
