题目内容
| 3 |
| 11 |
| 3 |
| 11 |
| 3 |
| 11 |
| 4 |
| 1 |
| 4 |
| 1 |
| 12 |
| 11 |
| 12 |
| 11 |
| 7 |
| 23 |
7
7
=| 7 |
| 23 |
| 1 |
| 7 |
| 1 |
| 23 |
| 1 |
| 23 |
分析:计算
×4时,把4看作
,再进行计算;由
×
,根据除以一个数等于乘这个数的倒数,可以写出
÷7=
×
,然后求出结果即可.
| 3 |
| 11 |
| 4 |
| 1 |
| 7 |
| 23 |
| 1 |
| 7 |
| 7 |
| 23 |
| 7 |
| 23 |
| 1 |
| 7 |
解答:解:
×4=
×
=
;
÷7=
×
=
;
故答案为:
,
,
;7,
.
| 3 |
| 11 |
| 3 |
| 11 |
| 4 |
| 1 |
| 12 |
| 11 |
| 7 |
| 23 |
| 7 |
| 23 |
| 1 |
| 7 |
| 1 |
| 23 |
故答案为:
| 3 |
| 11 |
| 4 |
| 1 |
| 12 |
| 11 |
| 1 |
| 23 |
点评:先仔细观察算式,根据数字特点,进行解答.
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