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脱式计算:(45+14)÷73+710(0.75-310)×(29+13)514÷421×0.642-613÷926-23.
题目详情
脱式计算:
(
| (0.75-
| ||||||||||||||
| 2-
|
▼优质解答
答案和解析
(1)(
+
)÷
+
,
=
×
+
,
=
+
,
=
;
(2)(0.75-
)×(
+
),
=(0.75-0.3)×
,
=0.45×
,
=0.25;
(3)
÷
×0.64,
=
×
×0.64,
=1.2;
(4)2-
÷
-
,
=2-
×
-
,
=2-
-
,
=0.
| 4 |
| 5 |
| 1 |
| 4 |
| 7 |
| 3 |
| 7 |
| 10 |
=
| 21 |
| 20 |
| 3 |
| 7 |
| 7 |
| 10 |
=
| 9 |
| 20 |
| 7 |
| 10 |
=
| 23 |
| 20 |
(2)(0.75-
| 3 |
| 10 |
| 2 |
| 9 |
| 1 |
| 3 |
=(0.75-0.3)×
| 5 |
| 9 |
=0.45×
| 5 |
| 9 |
=0.25;
(3)
| 5 |
| 14 |
| 4 |
| 21 |
=
| 5 |
| 14 |
| 21 |
| 4 |
=1.2;
(4)2-
| 6 |
| 13 |
| 9 |
| 26 |
| 2 |
| 3 |
=2-
| 6 |
| 13 |
| 26 |
| 9 |
| 2 |
| 3 |
=2-
| 4 |
| 3 |
| 2 |
| 3 |
=0.
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