题目内容
(54+
| 105×13-1890÷18 | 36÷[(
| ||||||
| 9.25×9.9+92.5% | 258×852852-852×258258. |
(1)(54+
)÷9,
=(54+
)×
,
=54×
+
×
,
=6+
,
=6
;
(2)105×13-1890÷18,
=1365-105,
=1260;
(3)36÷[(
-
)×3],
=36÷[
×3-
×3],
=36÷
,
=24;
(4)9.25×9.9+92.5%,
=0.925×99+0.925,
=0.925×(99+1),
=0.925×100,
=92.5;
(5)258×852852-852×258258,
=258×852×1001-852×258×1001,
=0.
| 9 |
| 13 |
=(54+
| 9 |
| 13 |
| 1 |
| 9 |
=54×
| 1 |
| 9 |
| 9 |
| 13 |
| 1 |
| 9 |
=6+
| 1 |
| 13 |
=6
| 1 |
| 13 |
(2)105×13-1890÷18,
=1365-105,
=1260;
(3)36÷[(
| 5 |
| 6 |
| 1 |
| 3 |
=36÷[
| 5 |
| 6 |
| 1 |
| 3 |
=36÷
| 3 |
| 2 |
=24;
(4)9.25×9.9+92.5%,
=0.925×99+0.925,
=0.925×(99+1),
=0.925×100,
=92.5;
(5)258×852852-852×258258,
=258×852×1001-852×258×1001,
=0.
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