Let's solve each of the decimal addition problems step by step.
---
A.
3.7
+
2.2
=
5.9
> Add the numbers: 3 + 2 = 5, and 0.7 + 0.2 = 0.9 → 5.9
---
B.
6.3
+
7.8
=
14.1
> 6 + 7 = 13, 0.3 + 0.8 = 1.1 → 13 + 1.1 = 14.1
---
C.
12.8
+
7.4
=
20.2
> 12 + 7 = 19, 0.8 + 0.4 = 1.2 → 19 + 1.2 = 20.2
---
D.
32.8
+
14.5
=
47.3
> 32 + 14 = 46, 0.8 + 0.5 = 1.3 → 46 + 1.3 = 47.3
---
E.
11.8
+
7.1
=
18.9
> 11 + 7 = 18, 0.8 + 0.1 = 0.9 → 18.9
---
F.
14.3
+
22.54
=
36.84
> Align decimals:
```
14.30
+ 22.54
-------
36.84
```
> 14 + 22 = 36, 0.30 + 0.54 = 0.84 → 36.84
---
G.
44.05
+
17.28
=
61.33
> Add:
```
44.05
+ 17.28
-------
61.33
```
> 44 + 17 = 61, 0.05 + 0.28 = 0.33 → 61.33
---
H.
53.34
+
31.42
=
84.76
> Add:
```
53.34
+ 31.42
-------
84.76
```
> 53 + 31 = 84, 0.34 + 0.42 = 0.76 → 84.76
---
I.
54.36
+
32.85
=
87.21
> Add:
```
54.36
+ 32.85
-------
87.21
```
> 54 + 32 = 86, 0.36 + 0.85 = 1.21 → 86 + 1.21 = 87.21
---
J.
47.05
+
51.62
=
98.67
> Add:
```
47.05
+ 51.62
-------
98.67
```
> 47 + 51 = 98, 0.05 + 0.62 = 0.67 → 98.67
---
K.
28.76
+
31.30
=
60.06
> Add:
```
28.76
+ 31.30
-------
60.06
```
> 28 + 31 = 59, 0.76 + 0.30 = 1.06 → 59 + 1.06 = 60.06
---
L.
91.55
+
15.4
=
106.95
> Align decimals:
```
91.55
+ 15.40
-------
106.95
```
> 91 + 15 = 106, 0.55 + 0.40 = 0.95 → 106.95
---
✔ Final Answers:
| Problem | Answer |
|--------|--------|
| A | 5.9 |
| B | 14.1 |
| C | 20.2 |
| D | 47.3 |
| E | 18.9 |
| F | 36.84 |
| G | 61.33 |
| H | 84.76 |
| I | 87.21 |
| J | 98.67 |
| K | 60.06 |
| L | 106.95 |
---
💡
Tips for Adding Decimals:
- Always align the decimal points.
- Add zeros to make the numbers the same length if needed.
- Add as you would with whole numbers.
- Place the decimal point in the answer directly below the others.
Let me know if you'd like this formatted for printing or need a worksheet version!
Parent Tip: Review the logic above to help your child master the concept of adding decimals free worksheet.
