题目内容
用递等式计算(怎样简便怎样算).
+
+
-
+
+0.6-
-(
-
).
| 1 |
| 5 |
| 3 |
| 8 |
| 4 |
| 5 |
| 8 |
| 9 |
| 2 |
| 3 |
| 1 |
| 3 |
| 17 |
| 19 |
| 17 |
| 19 |
| 5 |
| 8 |
| 5 |
| 8 |
| 1 |
| 2 |
(1)
+
+
,
=
+
+
,
=1+
,
=1
;
(2)
-
+
,
=
-(
-
),
=
-
,
=
;
(3)
+0.6-
,
=
-
+0.6,
=0+0.6,
=0.6;
(4)
-(
-
)
=
-
+
,
=0+
,
=
.
| 1 |
| 5 |
| 3 |
| 8 |
| 4 |
| 5 |
=
| 1 |
| 5 |
| 4 |
| 5 |
| 3 |
| 8 |
=1+
| 3 |
| 8 |
=1
| 3 |
| 8 |
(2)
| 8 |
| 9 |
| 2 |
| 3 |
| 1 |
| 3 |
=
| 8 |
| 9 |
| 2 |
| 3 |
| 1 |
| 3 |
=
| 8 |
| 9 |
| 1 |
| 3 |
=
| 5 |
| 9 |
(3)
| 17 |
| 19 |
| 17 |
| 19 |
=
| 17 |
| 19 |
| 17 |
| 19 |
=0+0.6,
=0.6;
(4)
| 5 |
| 8 |
| 5 |
| 8 |
| 1 |
| 2 |
=
| 5 |
| 8 |
| 5 |
| 8 |
| 1 |
| 2 |
=0+
| 1 |
| 2 |
=
| 1 |
| 2 |
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