题目内容
| 4 |
| 15 |
| 8 |
| 9 |
| 1 |
| 4 |
①
+( )=1;
1-
=
;
所以
+
=1;
②( )÷
=1;
×1=
;
所以
÷
=1;
③1.5×( )=1;
1÷1.5=
;
所以1.5×
=1;
④3
-( )=1;
3
-1=2
;
所以3
-2
=1;
即:
+
=
÷
=1.5×
=1=3
-2
.
故答案为:
,
,
,2
.
| 4 |
| 15 |
1-
| 4 |
| 15 |
| 11 |
| 15 |
所以
| 4 |
| 15 |
| 11 |
| 15 |
②( )÷
| 8 |
| 9 |
| 8 |
| 9 |
| 8 |
| 9 |
所以
| 8 |
| 9 |
| 8 |
| 9 |
③1.5×( )=1;
1÷1.5=
| 2 |
| 3 |
所以1.5×
| 2 |
| 3 |
④3
| 1 |
| 4 |
3
| 1 |
| 4 |
| 1 |
| 4 |
所以3
| 1 |
| 4 |
| 1 |
| 4 |
即:
| 4 |
| 15 |
| 11 |
| 15 |
| 8 |
| 9 |
| 8 |
| 9 |
| 2 |
| 3 |
| 1 |
| 4 |
| 1 |
| 4 |
故答案为:
| 11 |
| 15 |
| 8 |
| 9 |
| 2 |
| 3 |
| 1 |
| 4 |
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