题目内容
计算下面各题,能简算的要简算.
27×
| [
| (
|
|
(1)27×
+73÷4,
=27×
+73×
,
=
×(27+73),
=
×100,,
=25;
(2)[
-(
-
)]÷
,
=[
-
+
]÷
,
=[1-
]÷
,
=
÷
,
=
×16,
=4;
(3)(
-
-
)×24,
=
×24-
×24-
×24,
=18-9-4,
=5;
(4)
-
×(
-
),
=
-
×
,
=
-
,
=
;
| 1 |
| 4 |
=27×
| 1 |
| 4 |
| 1 |
| 4 |
=
| 1 |
| 4 |
=
| 1 |
| 4 |
=25;
(2)[
| 1 |
| 2 |
| 3 |
| 4 |
| 1 |
| 2 |
| 1 |
| 16 |
=[
| 1 |
| 2 |
| 3 |
| 4 |
| 1 |
| 2 |
| 1 |
| 16 |
=[1-
| 3 |
| 4 |
| 1 |
| 16 |
=
| 1 |
| 4 |
| 1 |
| 16 |
=
| 1 |
| 4 |
=4;
(3)(
| 3 |
| 4 |
| 3 |
| 8 |
| 1 |
| 6 |
=
| 3 |
| 4 |
| 3 |
| 8 |
| 1 |
| 6 |
=18-9-4,
=5;
(4)
| 3 |
| 5 |
| 2 |
| 5 |
| 4 |
| 5 |
| 1 |
| 20 |
=
| 3 |
| 5 |
| 2 |
| 5 |
| 3 |
| 4 |
=
| 3 |
| 5 |
| 3 |
| 10 |
=
| 3 |
| 10 |
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