题目内容
在横线里填上合适的数,在○里填上适当的运算符号.
12÷
=12○
12÷
=12○
25÷
=25○
÷
=
○
÷
=
○
÷
=
○
.
12÷
| 1 |
| 4 |
4
4
12÷
| 3 |
| 4 |
| 4 |
| 3 |
| 4 |
| 3 |
25÷
| 5 |
| 8 |
| 8 |
| 5 |
| 8 |
| 5 |
| 5 |
| 7 |
| 5 |
| 21 |
| 5 |
| 7 |
| 21 |
| 5 |
| 21 |
| 5 |
| 4 |
| 8 |
| 15 |
| 16 |
| 4 |
| 8 |
| 16 |
| 15 |
| 16 |
| 15 |
| 15 |
| 16 |
| 5 |
| 8 |
| 15 |
| 16 |
| 8 |
| 5 |
| 8 |
| 5 |
分析:根据分数除法的计算法则:甲数除以乙数(0除外),等于甲数乘乙数的倒数;据此依次解答即可.
解答:解:在横线里填上合适的数,在○里填上适当的运算符号.
12÷
=12×4
12÷
=12×
25÷
=25×
÷
=
×
÷
=
×
÷
=
×
故答案为:×,4,×,
,×,
,×,
,×,
,×,
.
12÷
| 1 |
| 4 |
12÷
| 3 |
| 4 |
| 4 |
| 3 |
25÷
| 5 |
| 8 |
| 8 |
| 5 |
| 5 |
| 7 |
| 5 |
| 21 |
| 5 |
| 7 |
| 21 |
| 5 |
| 4 |
| 8 |
| 15 |
| 16 |
| 4 |
| 8 |
| 16 |
| 15 |
| 15 |
| 16 |
| 5 |
| 8 |
| 15 |
| 16 |
| 8 |
| 5 |
故答案为:×,4,×,
| 4 |
| 3 |
| 8 |
| 5 |
| 21 |
| 5 |
| 16 |
| 15 |
| 8 |
| 5 |
点评:此题考查了分数除法计算法则的灵活运用.
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