计算
$0.7 + 1.8 =$
$1.3 + 6.8 =$
$1.4 - 0.9 =$
$9.7 - 6 =$
$6 + 4.3 =$
$9 - 2.8 =$
$0.24 + 1.8 =$
$9.71 - 2.6 =$
$1.53 - 0.8 =$
$4.23 + 2.7 =$
$0.7 + 10.6 =$
$1.03 + 2.7 =$
$1.98 - 0.9 =$
$6.72 - 2.4 =$
$9.0 - 3.8 =$
$4.19 - 2.03 =$
$6.43 - 5.8 =$
$3.5 + 5.5 =$

2.5,8.1,0.5,3.7,10.3,6.2,2.04,7.11,0.73,6.93,11.3,3.73,1.08,4.32,5.2,2.16,0.63,9

计算小数加减法时，先把各数的小数点对齐（也就是把相同数位上的数对齐），再按照整数加减法的法则进行计算，最后在得数里对齐横线上的小数点点上小数点。
0.7 + 1.8 = 2.5；
1.3 + 6.8 = 8.1；
1.4 - 0.9 = 0.5；
9.7 - 6 = 3.7；
6 + 4.3 = 10.3；
9 - 2.8 = 6.2；
0.24 + 1.8 = 2.04；
9.71 - 2.6 = 7.11；
1.53 - 0.8 = 0.73；
4.23 + 2.7 = 6.93；
0.7 + 10.6 = 11.3；
1.03 + 2.7 = 3.73；
1.98 - 0.9 = 1.08；
6.72 - 2.4 = 4.32；
9.0 - 3.8 = 5.2；
4.19 - 2.03 = 2.16；
6.43 - 5.8 = 0.63；
3.5 + 5.5 = 9

列式计算
$2.98 + 0.46 =$
$\begin{array}{r}2.98 \\+ 0.46 \\\hline\end{array}$
$5.93 + 0.8 =$


$\begin{array}{r}\\\\\hline\end{array}$
$13.54 + 4.58 =$
$\begin{array}{r}\\\\\hline\end{array}$
$24.04 + 6.8 =$


$\begin{array}{r}\\\\\hline\end{array}$
$7.82 - 2.68 =$
$\begin{array}{r}\\\\\hline\end{array}$
$3.8 - 2.19 =$


$\begin{array}{r}\\\\\hline\end{array}$
$12.3 - 9.16 =$
$\begin{array}{r}\\\\\hline\end{array}$
$8 - 3.02 =$


$\begin{array}{r}\\\\\hline\end{array}$

3.44；6.73；18.12；30.84；5.14；1.61；3.14；4.98

$2.98 + 0.46$：
```
2.98
+ 0.46
------
3.44
```
$5.93 + 0.8$：
```
5.93
+ 0.80
------
6.73
```
$13.54 + 4.58$：
```
13.54
+ 4.58
------
18.12
```
$24.04 + 6.8$：
```
24.04
+ 6.80
------
30.84
```
$7.82 - 2.68$：
```
7.82
2.68
------
5.14
```
$3.8 - 2.19$：
```
3.80
2.19
------
1.61
```
$12.3 - 9.16$：
```
12.30
9.16
------
3.14
```
$8 - 3.02$：
```
8.00
3.02
------
4.98
```