题目内容
计算:
(1)1
×18.35-9
×1.75+3.5×
(2)1
×[(1.5+2
)÷3.75-
]÷
(3)[2-(8.25-5
)×
]÷0.9
(4)2
×(1
-
)÷[3
÷(
+1
)].
(1)1
| 3 |
| 4 |
| 7 |
| 20 |
| 1 |
| 2 |
(2)1
| 1 |
| 24 |
| 2 |
| 3 |
| 2 |
| 3 |
| 8 |
| 9 |
(3)[2-(8.25-5
| 1 |
| 3 |
| 2 |
| 3 |
(4)2
| 2 |
| 3 |
| 7 |
| 8 |
| 5 |
| 6 |
| 1 |
| 4 |
| 1 |
| 8 |
| 5 |
| 6 |
(1)1
×18.35-9
×1.75+3.5×
=1.75×18.35-9.35×1.75+1.75,
=(18.35-9.35+1)×1.75,
=10×1.75,
=17.5;
(2)1
×[(1.5+2
)÷3.75-
]÷
=
×[(
+
)×
-
]×
,
=
×[
×
-
]×
,
=
×[(
-
]×
,
=
×
×
,
=
;
(3)[2-(8.25-5
)×
]÷0.9,
=[2-(
-
)×
]÷0.9,
=[2-
×
]÷0.9,
=[2-
]×
,
=
×
,
=
;
(4)2
×(1
-
)÷[3
÷(
+1
)].
=
×
÷[
×
],
=
×
,
=
.
| 3 |
| 4 |
| 7 |
| 20 |
| 1 |
| 2 |
=1.75×18.35-9.35×1.75+1.75,
=(18.35-9.35+1)×1.75,
=10×1.75,
=17.5;
(2)1
| 1 |
| 24 |
| 2 |
| 3 |
| 2 |
| 3 |
| 8 |
| 9 |
=
| 25 |
| 24 |
| 3 |
| 2 |
| 8 |
| 3 |
| 4 |
| 15 |
| 2 |
| 3 |
| 9 |
| 8 |
=
| 25 |
| 24 |
| 25 |
| 6 |
| 4 |
| 15 |
| 2 |
| 3 |
| 9 |
| 8 |
=
| 25 |
| 24 |
| 10 |
| 9 |
| 2 |
| 3 |
| 9 |
| 8 |
=
| 25 |
| 24 |
| 4 |
| 9 |
| 9 |
| 8 |
=
| 25 |
| 48 |
(3)[2-(8.25-5
| 1 |
| 3 |
| 2 |
| 3 |
=[2-(
| 33 |
| 4 |
| 16 |
| 3 |
| 2 |
| 3 |
=[2-
| 35 |
| 12 |
| 2 |
| 3 |
=[2-
| 35 |
| 18 |
| 10 |
| 9 |
=
| 1 |
| 18 |
| 10 |
| 9 |
=
| 5 |
| 81 |
(4)2
| 2 |
| 3 |
| 7 |
| 8 |
| 5 |
| 6 |
| 1 |
| 4 |
| 1 |
| 8 |
| 5 |
| 6 |
=
| 8 |
| 3 |
| 25 |
| 24 |
| 13 |
| 4 |
| 24 |
| 47 |
=
| 25 |
| 9 |
| 47 |
| 78 |
=
| 1175 |
| 702 |
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