4. 按要求填空，并写出除法算式。
$□ ◯ □ = □$
$□ ◯ □ = □$

42÷6=7 5 20÷4=5

5. 把 24 瓶矿泉水平均分给小丽和她的 5 个好朋友，每人分几瓶?

$□ ÷ □ = □$

24÷6=4

6. 把 12 盒牛奶平均分，每份有几盒？用除法算式表示平均分的过程。

12÷2=6 12÷3=4 12÷4=3 12÷6=2

7. 在$□$里填上合适的数。


| 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 4 | 4 | 4 | 4 | | | | |
| 8 | | | | | | | |
$2 × \boxed{8} = 16$
$4 × □ = 16$
$8 × □ = 16$
| 9 | 9 | | | | |
| --- | --- | --- | --- | --- | --- |
| 6 | 6 | 6 | | | |
| 3 | 3 | 3 | 3 | 3 | 3 |
$18 ÷ \boxed{2} = 9$
$18 ÷ □ = 6$
$18 ÷ □ = 3$

4 2 3 6