1. 直接写出得数。
6×8+2=
4×7+5=
6×9+7=
9×5+4=
6×6+4=
3×6+3=
答案：6×8+2=50
4×7+5=33
6×9+7=61
9×5+4=49
6×6+4=40
3×6+3=21
2.圈一圈，算一算。
(1)
3 2
× 4
(2)
2 7 3
× 3
答案：(1)
$\begin{array}{r} 32\\ ×\ \ 4\\ \hline 128\end{array}$
(2)
$\begin{array}{r} 273\\ ×\ \ \ 3\\ \hline 819\end{array}$
3. 用竖式计算。
$41×6=$
$2×38=$
$18×5=$
$123×4=$
$4×231=$
$116×6=$
答案：$41×6=246$
```
41
× 6
----
246
```
$2×38=76$
```
38
× 2
----
76
```
$18×5=90$
```
18
× 5
----
90
```
$123×4=492$
```
123
× 4
----
492
```
$4×231=924$
```
231
× 4
----
924
```
$116×6=696$
```
116
× 6
----
696
```
