题目内容
计算各题,能简便运算的写出主要过程.
36×(
|
| ||||||||||||
23-
| [1-(
|
(1)36×(
+
+
),
=36×
+36×
+36×
,
=9+6+4,
=15+4,
=19;
(2)
×7+
×11,
=
×(7+11),
=
×18,
=10;
(3)23-
×
÷
,
=23-
÷
,
=23-18,
=5;
(4)[1-(
+
)]÷
,
=[1-
]÷
,
=
÷
,
=
.
| 1 |
| 4 |
| 1 |
| 6 |
| 1 |
| 9 |
=36×
| 1 |
| 4 |
| 1 |
| 6 |
| 1 |
| 9 |
=9+6+4,
=15+4,
=19;
(2)
| 5 |
| 9 |
| 5 |
| 9 |
=
| 5 |
| 9 |
=
| 5 |
| 9 |
=10;
(3)23-
| 8 |
| 9 |
| 3 |
| 4 |
| 1 |
| 27 |
=23-
| 2 |
| 3 |
| 1 |
| 27 |
=23-18,
=5;
(4)[1-(
| 1 |
| 4 |
| 3 |
| 8 |
| 1 |
| 4 |
=[1-
| 5 |
| 8 |
| 1 |
| 4 |
=
| 3 |
| 8 |
| 1 |
| 4 |
=
| 3 |
| 2 |
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