题目内容
脱式能简要简
|
|
| 5-
|
(1)
÷[1-(
+
)]
=
÷[1-
],
=
÷
,
=
×
,
=
;
(2)
-
×
+
÷2
=
-
×
+
×
,
=(1-
+
)×
,
=1×
,
=
;
(3)
÷2
+
×
+
×10
=
×
+
×
+
×10,
=(
+
+10)×
,
=(1+10)×
,
=11×
,
=5;
5-
÷
-
=5-
×
-
,
=5-
-
,
=5-(
+
),
=5-2,
=3.
| 3 |
| 5 |
| 1 |
| 3 |
| 2 |
| 5 |
=
| 3 |
| 5 |
| 11 |
| 15 |
=
| 3 |
| 5 |
| 4 |
| 15 |
=
| 3 |
| 5 |
| 15 |
| 4 |
=
| 9 |
| 4 |
(2)
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 2 |
| 1 |
| 3 |
=
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 2 |
=(1-
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 3 |
=1×
| 1 |
| 3 |
=
| 1 |
| 3 |
(3)
| 7 |
| 9 |
| 1 |
| 5 |
| 2 |
| 9 |
| 5 |
| 11 |
| 5 |
| 11 |
=
| 7 |
| 9 |
| 5 |
| 11 |
| 2 |
| 9 |
| 5 |
| 11 |
| 5 |
| 11 |
=(
| 7 |
| 9 |
| 2 |
| 9 |
| 5 |
| 11 |
=(1+10)×
| 5 |
| 11 |
=11×
| 5 |
| 11 |
=5;
5-
| 2 |
| 11 |
| 9 |
| 22 |
| 2 |
| 3 |
=5-
| 2 |
| 11 |
| 22 |
| 9 |
| 2 |
| 3 |
=5-
| 4 |
| 3 |
| 2 |
| 3 |
=5-(
| 4 |
| 3 |
| 2 |
| 3 |
=5-2,
=3.
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