题目内容
计算.
(1)
-(
+
)×
(2)3.68×[1÷(2.1-2.09)]
(3)7.8÷[32×(1-
)+3.6].
(1)
| 7 |
| 8 |
| 1 |
| 2 |
| 3 |
| 5 |
| 5 |
| 11 |
(2)3.68×[1÷(2.1-2.09)]
(3)7.8÷[32×(1-
| 5 |
| 8 |
(1)
-(
+
)×
,
=
-
×
,
=
-
,
=
;
(2)3.68×[1÷(2.1-2.09)],
=3.68×[1÷0.01],
=3.68×100,
=368;
(3)7.8÷[32×(1-
)+3.6],
=7.8÷[32×
+3.6],
=7.8÷[12+3.6],
=7.8÷15.6,
=0.5.
| 7 |
| 8 |
| 1 |
| 2 |
| 3 |
| 5 |
| 5 |
| 11 |
=
| 7 |
| 8 |
| 11 |
| 10 |
| 5 |
| 11 |
=
| 7 |
| 8 |
| 1 |
| 2 |
=
| 3 |
| 8 |
(2)3.68×[1÷(2.1-2.09)],
=3.68×[1÷0.01],
=3.68×100,
=368;
(3)7.8÷[32×(1-
| 5 |
| 8 |
=7.8÷[32×
| 3 |
| 8 |
=7.8÷[12+3.6],
=7.8÷15.6,
=0.5.
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