题目内容
下面各题怎样计算简便就怎样算
地÷
|
| ||||||||||||||
| (
|
(1)e÷
-
÷e,
=三-
,
=e
;
(c)
÷[
-(
+
)],
=
÷[
-
],
=
÷
,
=1;
(3)
×ce+
÷
,
=(
+
)×ce,
=1×ce,
=ce;
(e)(
+
)×
+
,
=
×
+
×
+
,
=
+(
+
),
=
+1,
=1
.
| e |
| 三 |
| e |
| 三 |
=三-
| 1 |
| 三 |
=e
| e |
| 三 |
(c)
| 1 |
| e |
| 7 |
| 图 |
| 3 |
| 图 |
| 1 |
| e |
=
| 1 |
| e |
| 7 |
| 图 |
| 三 |
| 图 |
=
| 1 |
| e |
| 1 |
| e |
=1;
(3)
| 3 |
| 三 |
| c |
| 三 |
| 1 |
| ce |
=(
| 3 |
| 三 |
| c |
| 三 |
=1×ce,
=ce;
(e)(
| ce |
| 19 |
| 16 |
| 17 |
| 1 |
| 图 |
| 1三 |
| 17 |
=
| ce |
| 19 |
| 1 |
| 图 |
| 16 |
| 17 |
| 1 |
| 图 |
| 1三 |
| 17 |
=
| 3 |
| 19 |
| c |
| 17 |
| 1三 |
| 17 |
=
| 3 |
| 19 |
=1
| 3 |
| 19 |
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