题目内容
能简算的要简算.
|
| [1-(
|
(1)
×7+
×11,
=
×(7+11),
=
×18,
=10;
(2)
×99+
,
=
×(99+1),
=
×100,
=16;
(3)[1-(
+
)]÷
,
=[1-
]÷
,
=
×4,
=1.5.
| 5 |
| 9 |
| 5 |
| 9 |
=
| 5 |
| 9 |
=
| 5 |
| 9 |
=10;
(2)
| 4 |
| 25 |
| 4 |
| 25 |
=
| 4 |
| 25 |
=
| 4 |
| 25 |
=16;
(3)[1-(
| 1 |
| 4 |
| 3 |
| 8 |
| 1 |
| 4 |
=[1-
| 5 |
| 8 |
| 1 |
| 4 |
=
| 3 |
| 8 |
=1.5.
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