题目内容
a+b=ab,(a,b不相等),如3+
=3×
,请写出象这样三个不同的等式:
| 3 |
| 2 |
| 3 |
| 2 |
4+
=4×
| 4 |
| 3 |
| 4 |
| 3 |
4+
=4×
,| 4 |
| 3 |
| 4 |
| 3 |
5+
=5×
,6+
=6×
| 5 |
| 4 |
| 5 |
| 4 |
| 6 |
| 5 |
| 6 |
| 5 |
5+
=5×
,6+
=6×
.| 5 |
| 4 |
| 5 |
| 4 |
| 6 |
| 5 |
| 6 |
| 5 |
分析:由3+
=3×
,可得出规律为:整数是3,分数的分子和整数相同,分母比整数少1;据此规律任意写出三个不同的等式即可.
| 3 |
| 2 |
| 3 |
| 2 |
解答:解:如4+
=4×
;
5+
=5×
;
6+
=6×
;
故答案为:4+
=4×
,5+
=5×
,6+
=6×
(答案不唯一).
| 4 |
| 3 |
| 4 |
| 3 |
5+
| 5 |
| 4 |
| 5 |
| 4 |
6+
| 6 |
| 5 |
| 6 |
| 5 |
故答案为:4+
| 4 |
| 3 |
| 4 |
| 3 |
| 5 |
| 4 |
| 5 |
| 4 |
| 6 |
| 5 |
| 6 |
| 5 |
点评:解决此题关键是根据3+
=3×
,找出规律,进而据规律写出等式即可.
| 3 |
| 2 |
| 3 |
| 2 |
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