题目内容
能简算的要简算.
|
|
| [1-(
|
(1)
×
÷
,
=
×
×
,
=
×(
×
),
=
×
,
=1;
(2)
÷(
+
),
=
÷
,
=
;
(3)
×7+
×11,
=
×(7+11),
=
×18,
=10;
(4)[1-(
+
)]÷
,
=[1-
]÷
,
=
÷
,
=
.
| 3 |
| 4 |
| 6 |
| 13 |
| 9 |
| 26 |
=
| 3 |
| 4 |
| 6 |
| 13 |
| 26 |
| 9 |
=
| 3 |
| 4 |
| 6 |
| 13 |
| 26 |
| 9 |
=
| 3 |
| 4 |
| 4 |
| 3 |
=1;
(2)
| 4 |
| 9 |
| 1 |
| 3 |
| 1 |
| 3 |
=
| 4 |
| 9 |
| 2 |
| 3 |
=
| 2 |
| 3 |
(3)
| 5 |
| 9 |
| 5 |
| 9 |
=
| 5 |
| 9 |
=
| 5 |
| 9 |
=10;
(4)[1-(
| 1 |
| 4 |
| 3 |
| 8 |
| 1 |
| 4 |
=[1-
| 5 |
| 8 |
| 1 |
| 4 |
=
| 3 |
| 8 |
| 1 |
| 4 |
=
| 3 |
| 2 |
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