题目内容
脱式计算.
(1)[
-(
+
×50%)]÷
;
(2)
-
÷5×
;
(3)(9.3×
-7.3)÷
;
(4)
÷[32×(1-
)+
].
(1)[
| 7 |
| 10 |
| 1 |
| 2 |
| 2 |
| 5 |
| 16 |
| 7 |
(2)
| 5 |
| 4 |
| 5 |
| 4 |
| 2 |
| 3 |
(3)(9.3×
| 5 |
| 6 |
| 9 |
| 4 |
(4)
| 39 |
| 5 |
| 5 |
| 8 |
| 18 |
| 5 |
(1)[
-(
+
×50%)]÷
=[
-(
+
×
)]×
,
=[
-(
+
)]×
,
=[
-
]×
,
=0×
,
=0;
(2)
-
÷5×
=
-
×
×
,
=
-
,
=
;
(3)(9.3×
-7.3)÷
=(7.75-7.3)×
,
=0.45×
,
=0.2;
(4)
÷[32×(1-
)+
]
=
÷[32×
+
],
=
÷[12+
],
=
×
,
=
.
| 7 |
| 10 |
| 1 |
| 2 |
| 2 |
| 5 |
| 16 |
| 7 |
=[
| 7 |
| 10 |
| 1 |
| 2 |
| 2 |
| 5 |
| 1 |
| 2 |
| 16 |
| 7 |
=[
| 7 |
| 10 |
| 1 |
| 2 |
| 1 |
| 5 |
| 16 |
| 7 |
=[
| 7 |
| 10 |
| 7 |
| 10 |
| 16 |
| 7 |
=0×
| 16 |
| 7 |
=0;
(2)
| 5 |
| 4 |
| 5 |
| 4 |
| 2 |
| 3 |
=
| 5 |
| 4 |
| 5 |
| 4 |
| 1 |
| 5 |
| 2 |
| 3 |
=
| 5 |
| 4 |
| 1 |
| 6 |
=
| 13 |
| 12 |
(3)(9.3×
| 5 |
| 6 |
| 9 |
| 4 |
=(7.75-7.3)×
| 4 |
| 9 |
=0.45×
| 4 |
| 9 |
=0.2;
(4)
| 39 |
| 5 |
| 5 |
| 8 |
| 18 |
| 5 |
=
| 39 |
| 5 |
| 3 |
| 8 |
| 18 |
| 5 |
=
| 39 |
| 5 |
| 18 |
| 5 |
=
| 39 |
| 5 |
| 5 |
| 78 |
=
| 1 |
| 2 |
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