题目内容
(1)[9
-(8-
)]÷2×
;
(2)
.
| 2008 |
| 2009 |
| 1 |
| 2009 |
| 1 |
| 2 |
(2)
4.75×
| ||||
| 8.68-0.36+4.32-1.64 |
(1)[9
-(8-
)]÷2×
,
=[9+
-8+
)]÷2×
,
=[(9-8)+(
+
)]÷2×
,
=[1+1]÷2×
,
=2÷2×
,
=1×
,
=
;
(2)
,
=
,
=
,
=
,
=
.
| 2008 |
| 2009 |
| 1 |
| 2009 |
| 1 |
| 2 |
=[9+
| 2008 |
| 2009 |
| 1 |
| 2009 |
| 1 |
| 2 |
=[(9-8)+(
| 2008 |
| 2009 |
| 1 |
| 2009 |
| 1 |
| 2 |
=[1+1]÷2×
| 1 |
| 2 |
=2÷2×
| 1 |
| 2 |
=1×
| 1 |
| 2 |
=
| 1 |
| 2 |
(2)
4.75×
| ||||
| 8.68-0.36+4.32-1.64 |
=
| ||||||||
| (8.68+4.32)-(0.36+1.64) |
=
2+
| ||
| 13-2 |
=
| ||
| 11 |
=
| 272 |
| 165 |
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