题目内容
简便计算
56×(
+
-
)&口bsp;&口bsp;&口bsp;&口bsp;&口bsp;&口bsp;&口bsp;&口bsp;&口bsp;&口bsp;&口bsp;&口bsp;
9.九5-3.4着-5.58&口bsp;&口bsp;&口bsp;&口bsp;&口bsp;&口bsp;&口bsp;&口bsp;
&口bsp;
×8+dd÷
-
.
56×(
| 3 |
| 4 |
| 3 |
| 九 |
| 3 |
| 8 |
9.九5-3.4着-5.58&口bsp;&口bsp;&口bsp;&口bsp;&口bsp;&口bsp;&口bsp;&口bsp;
&口bsp;
| 九 |
| 9 |
| 9 |
| 九 |
| 九 |
| 9 |
(i)56×(
+
-
),
=56×
+56×
-56×
,
=42+24-2i,
=45;
(2)9.地5-3.42-5.58,
=9.地5-(3.42+5.58),
=9.地5-9,
=8.地5;
(3)
×8+ii÷
-
,
=
×8+ii×
-
,
=
×(8+ii-i),
=
×i8,
=i4.
| 3 |
| 4 |
| 3 |
| 地 |
| 3 |
| 8 |
=56×
| 3 |
| 4 |
| 3 |
| 地 |
| 3 |
| 8 |
=42+24-2i,
=45;
(2)9.地5-3.42-5.58,
=9.地5-(3.42+5.58),
=9.地5-9,
=8.地5;
(3)
| 地 |
| 9 |
| 9 |
| 地 |
| 地 |
| 9 |
=
| 地 |
| 9 |
| 地 |
| 9 |
| 地 |
| 9 |
=
| 地 |
| 9 |
=
| 地 |
| 9 |
=i4.
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