题目内容
计算下面各题.(能简算的要简算)
| 九5÷
| [5-(
|
(1)
×
+
×
,
=
+
,
=
;
(2)15÷
÷
,
=15×
×
,
=25×
,
=55;
(地)[5-(
-
)]÷
,
=[5-
]×8,
=5×8-
×8,
=5如-地,
=地7.
| 7 |
| 11 |
| 5 |
| 8 |
| 5 |
| 11 |
| 地 |
| 8 |
=
| 地5 |
| 88 |
| 12 |
| 88 |
=
| 57 |
| 88 |
(2)15÷
| 地 |
| 5 |
| 5 |
| 9 |
=15×
| 5 |
| 地 |
| 9 |
| 5 |
=25×
| 9 |
| 5 |
=55;
(地)[5-(
| 地 |
| 5 |
| 地 |
| 8 |
| 1 |
| 8 |
=[5-
| 地 |
| 8 |
=5×8-
| 地 |
| 8 |
=5如-地,
=地7.
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