Let's solve each of the addition problems involving decimal numbers (to 2 decimal places) step by step.
We will write the numbers in columns, aligning the decimal points, and then add them. Let’s go through each one:
---
1) 7.27 + 85.95
```
7.27
+ 85.95
-------
93.22
```
✔ Answer: 93.22
---
2) 78.73 + 10.96
```
78.73
+ 10.96
-------
89.69
```
✔ Answer: 89.69
---
3) 88.98 + 83.18
```
88.98
+ 83.18
-------
172.16
```
✔ Answer: 172.16
---
4) 77.85 + 90.35
```
77.85
+ 90.35
-------
168.20
```
✔ Answer: 168.20
---
5) 57.78 + 94.26
```
57.78
+ 94.26
-------
152.04
```
✔ Answer: 152.04
---
6) 19.01 + 4.74
```
19.01
+ 4.74
-------
23.75
```
✔ Answer: 23.75
---
7) 7.96 + 26.2
Note: 26.2 is the same as 26.20
```
7.96
+ 26.20
-------
34.16
```
✔ Answer: 34.16
---
8) 88.06 + 33.43
```
88.06
+ 33.43
-------
121.49
```
✔ Answer: 121.49
---
9) 81.57 + 0.78
```
81.57
+ 0.78
-------
82.35
```
✔ Answer: 82.35
---
10) 18.15 + 82.8
Note: 82.8 = 82.80
```
18.15
+ 82.80
-------
100.95
```
✔ Answer: 100.95
---
11) 5.84 + 84.69
```
5.84
+ 84.69
-------
90.53
```
✔ Answer: 90.53
---
12) 17.22 + 14.15
```
17.22
+ 14.15
-------
31.37
```
✔ Answer: 31.37
---
✔ Final Answers:
1) 93.22
2) 89.69
3) 172.16
4) 168.20
5) 152.04
6) 23.75
7) 34.16
8) 121.49
9) 82.35
10) 100.95
11) 90.53
12) 31.37
---
🔍 Explanation:
When adding decimals:
- Always
align the decimal points.
- Add zeros if needed to make both numbers have the same number of decimal places.
- Add as you would with whole numbers.
- Place the decimal point in the answer directly below the others.
This ensures accuracy when working with money or measurements that require precision to two decimal places.
Let me know if you'd like this formatted as a printable worksheet!
Parent Tip: Review the logic above to help your child master the concept of adding decimals 4th grade worksheet.
