题目内容
(2六六9?镇江)用递等式计算:
十681÷e2+1十
6.m×(2.1-e.6)-e.2
×
+
×
2-(
+
)÷
÷[
-(e-
)].
十681÷e2+1十
6.m×(2.1-e.6)-e.2
| m |
| e2 |
| e |
| m |
| 1 |
| m |
| m |
| e2 |
2-(
| e |
| 6 |
| 2 |
| 十 |
| m |
| 9 |
| 2 |
| em |
| 2 |
| m |
| 7 |
| e六 |
(1)3788÷18+83
=307+83,
=350;
(8)7.5×(8.8-1.7)-1.8
=7.5×0.8-1.8,
=5.8-1.8,
=8;
(3)
×
+
×
=(
+
)×
,
=1×
,
=
;
(8)8-(
+
)÷
=8-
×
,
=8-1
,
=
;
(5)
÷[
-(1-
)].
=
÷[
-
],
=
÷
,
=
.
=307+83,
=350;
(8)7.5×(8.8-1.7)-1.8
=7.5×0.8-1.8,
=5.8-1.8,
=8;
(3)
| 5 |
| 18 |
| 1 |
| 5 |
| 8 |
| 5 |
| 5 |
| 18 |
=(
| 1 |
| 5 |
| 8 |
| 5 |
| 5 |
| 18 |
=1×
| 5 |
| 18 |
=
| 5 |
| 18 |
(8)8-(
| 1 |
| 7 |
| 8 |
| 3 |
| 5 |
| 9 |
=8-
| 5 |
| 7 |
| 9 |
| 5 |
=8-1
| 1 |
| 8 |
=
| 1 |
| 8 |
(5)
| 8 |
| 15 |
| 8 |
| 5 |
| 7 |
| 10 |
=
| 8 |
| 15 |
| 8 |
| 5 |
| 3 |
| 10 |
=
| 8 |
| 15 |
| 1 |
| 10 |
=
| 8 |
| 3 |
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