To solve the problems involving adding and subtracting decimals, we need to align the decimal points and perform the operations carefully. Let's go through each problem step by step.
1. Adding and Subtracting Decimals
####
Left Column:
1.
22.774 + 8.874 =
- Align the decimals:
```
22.774
+ 8.874
________
31.648
```
-
Answer: 31.648
2.
66.344 - 33.122 =
- Align the decimals:
```
66.344
- 33.122
________
33.222
```
-
Answer: 33.222
3.
9.8 - 0.8 =
- Align the decimals:
```
9.8
- 0.8
______
9.0
```
-
Answer: 9.0
4.
19.19 - 17.17 =
- Align the decimals:
```
19.19
-17.17
_______
2.02
```
-
Answer: 2.02
5.
9.3 - 4.9 =
- Align the decimals:
```
9.3
- 4.9
______
4.4
```
-
Answer: 4.4
6.
8.7 + 6.63 =
- Align the decimals:
```
8.70
+ 6.63
_______
15.33
```
-
Answer: 15.33
7.
0.17 - 0.09 =
- Align the decimals:
```
0.17
- 0.09
_______
0.08
```
-
Answer: 0.08
8.
14.33 - 2.17 =
- Align the decimals:
```
14.33
- 2.17
_______
12.16
```
-
Answer: 12.16
####
Right Column:
1.
99.37 + 88.42 =
- Align the decimals:
```
99.37
+ 88.42
________
187.79
```
-
Answer: 187.79
2.
98.145 + 24.21 =
- Align the decimals:
```
98.145
+ 24.210
_________
122.355
```
-
Answer: 122.355
3.
5.7 + 5.9 =
- Align the decimals:
```
5.7
+ 5.9
______
11.6
```
-
Answer: 11.6
4.
122.37 + 23.48 =
- Align the decimals:
```
122.37
+ 23.48
_________
145.85
```
-
Answer: 145.85
5.
257.17 - 253.59 =
- Align the decimals:
```
257.17
- 253.59
_________
3.58
```
-
Answer: 3.58
6.
69.67 - 67.69 =
- Align the decimals:
```
69.67
- 67.69
________
1.98
```
-
Answer: 1.98
7.
8.27 + 18.97 =
- Align the decimals:
```
8.27
+18.97
_______
27.24
```
-
Answer: 27.24
8.
637.9 - 216.6 =
- Align the decimals:
```
637.9
- 216.6
________
421.3
```
-
Answer: 421.3
Final Answers:
```
Left Column:
1. 31.648
2. 33.222
3. 9.0
4. 2.02
5. 4.4
6. 15.33
7. 0.08
8. 12.16
Right Column:
1. 187.79
2. 122.355
3. 11.6
4. 145.85
5. 3.58
6. 1.98
7. 27.24
8. 421.3
```
Boxed Final Answer:
\[
\boxed{
\begin{array}{ll}
\text{Left Column:} & \text{Right Column:} \\
31.648 & 187.79 \\
33.222 & 122.355 \\
9.0 & 11.6 \\
2.02 & 145.85 \\
4.4 & 3.58 \\
15.33 & 1.98 \\
0.08 & 27.24 \\
12.16 & 421.3 \\
\end{array}
}
\]
Parent Tip: Review the logic above to help your child master the concept of addition and subtraction of decimals worksheets.
